Friday, 9 September 2016

Physics Questions

Section – A

1.             The driver of train A travelling at a speed of 54 kmh-1 applies brakes and retards the train uniformly. The train stops in 5 seconds. Another train B is travelling on the parallel with a speed of 36 kmh-1. Its driver applies the brakes and the train retards uniformly; train B  stops in 10seconds.
Plot speed-time graphs for both the trains on the same axis. Which of the trains travelled farther after the brakes were applied?
2.             State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving in a certain direction with an acceleration in the perpendicular direction.
3.             An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be
the distance covered and the displacement at the end of 2 minutes and 20 seconds?
4. .              The velocity of a body in motion is recorded every second as shown-
time(s)

0


2

3

4

5

6

7

8

9

10

Velocity(m/s)

62

54

48

42

36

30

24

18

12

6

0



Calculate the

(a) Acceleration (b) distance travelled and draw the graph.

6.             Which law of motion gives the measure of force?
7.             Define 1 newton force.
8.             Name the principle on which a rocket works.
9.             State Newton’s third law of motion and how does it explain the walking of man on the

ground?
10.          When small boy is trying to push a heavy stone, mention various forces acting on the
stone.
11.          A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate:
(a)  the net accelerating force;
(b)  the acceleration of the train; and
(c) the force of wagon 1 on wagon 2.
12.          Derive the second equation of motion  S ut 1 at2    graphically?
13.          Why does a person while firing a bullet holds the gun tightly to his shoulders?
14.          Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s-1 before the collision during which they stick together. What will be the velocity of the combined object after collision?
15.          Derive the third equation of motion- v2-u2=2aS
16.     Why does an athlete puts some sands or cushion on the ground while high jumping?
17.          State Newton’s second law of motion and derive it mathematically?



18.          Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
19.          Differentiate between mass and weight?
20.          The radius of earth is 6370Km and of mars is 3400 Km. If an object weighs 200N or earth, what will be its weight on mars. The mass of mars is 0.11 that of earth.
21.          Derive expression for force of attraction between two bodies and then define gravitational constant.
22.          What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface?

(Mass of the earth is 6 1024 kg and radius of the earth is 6.4 106 .)

23.          How does the weight of an object vary with respect to mass and radius of the earth? In a

hypothetical case, if the diameter of the earth becomes half of its present value and its mass

becomes four times of its present value, then how would the weight of any object on the

surface of the earth be affected?
 
24.          Show that the weight of an object on the moon is 6thof its weight on the earth..


25.        A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate

of 10 m s-2, with what velocity will it strike the ground? After what time will it strike the

ground?


26.          A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate the maximum

height to which it rises.



27.          On the earth, a stone is thrown from a height in a direction parallel to the earths surface

while another stone is simultaneously dropped from the same height. Which stone would

reach the ground first and why?
28.          State the factors on which acceleration due to gravity (g) depends?

29.          Define electrostatic force.

30.          Calculate the force of gravitation between the earth and the Sun, given that the mass of the

earth = 6 1024 kg and of the Sun = 2 1030 kg. The average distance between the two is

1.5 1011m.

31.          Why do you fall in the forward direction when a moving bus brakes to a stop and fall

backwards when it accelerates from rest?
32.          Prove that if a body is thrown vertically upward, the time of ascent is equal to the time of

descent.

33.          A ball thrown up vertically returns to the thrower after 6 s. Find

(a) the velocity with which it was thrown up.

(b) the maximum height it reaches, and


(c) its position after 4s.

Friday, 2 September 2016

7th class importent questions for practices

D. Give short answers (in 20-40 words) for the following queations.
1. What has Babur describe in Tuzuk-i-Bahuri?
In Tuzuk-i-Baburi, Babur has describe the physical features, climate, animals, birds, flowers, fruits and the life of the peoples, and the places he visited. He has also written about his life in detail.
2. List two problems that Humayun faced when he ascended the throne.
After ascending the throne, Humayun faced the following difficulties.
·       There was no proper system of administration.
·       His brothers were not happy with their share of territories and were protesting.
·       There was threat of invasion from the Rajputs, from Bahadur Shah of Gujrat, and from sher Shah, the ruler of the Afghans.
3. How did Sher Shah encourage trade?
Sher Shah encouraged trade by adopting the following measures-
1.       He introduced a new currency, a silver coin called the ‘rupia’.
2.       He reduced custom duties on goods.
3.       He built a network of roads connecting all parts of his empire.
4. Write two steps taken by Akbar to gain the loyalty of Rajputs.
Akbar followed certain steps to gain the loyalty of the Rajputs-
1.       He married into Rajput families and gave Rajput ladies the choice of practising their own religion.
2.       He gave high post to deserving Rajput chiefs.
5. ‘Jahangir continued with Akbar’s policy of tolerance’. Justify the statement.
Jahangir, like Akbar, maintained friendly relations with Rajputs, married into Rajput families and awarded high posts to deserving Rajput chiefs. Thus, Jahangir continued with Akbar’s policy of tolerance.
E. Give long answers (in 50-70 words) for the following questions.
1. How did Babur secure his position in India?
Babur was the first Mughal Emperor. He defeated Ibrahim Lodhi in the first battle of Panipat in 1526 and captured Delhi and Agra. He also defeated  RanaSanga of Mewar in the Battle of Khanua in 1527. In 1529 Babur defeated the Afghan chiefs at Ghaghara. These three battle secured Babur’s position in northern India.
2. Discuss the military campaigns of Shah Jahan?
Shah Jahan’s reign witnessed many revolts, chief among which was the revolt of the BundelaRajputs. Shah Jahan crushed the revolt easily. There was  a revolt in the Daccan too. He also sent his army to Balkh and Badakshan in Central Asia.
3. What do you know about the central and provincial administration of the Mughals?
At the centre, the king was the head of the both civil and military administration. The Mughal empire was divided into provinces or subas, each headed by a subadar. Each suba was divided into districts or sarkars, and the sarkars were divided into many parganas. A pargana comprised many villages. The katwal looked after town administration.
4. Why did Raja Todarmal introduce a new measuring device for land measurement? What was the measuring device?
Earlier land was measured with a rope. However, the rope shrunk when it was dry, and would stretch when it was wet. This changed the measurements. So Raja Todarmal had to introduce a new measuring device for land measurement.
The new measuring device introduced by Raja Todarmal was a rod  made of bamboo joined together by iron rings.
5. Write short note on-Din-i-ilahi, Zat and Sawar.
Din-i-ilahi - Din-i-ilahi, also called Tauhid-i-Ilahi. It was a religious path suggested by Akbar. It was a code of moral conduct reflecting Akbar’s secular ideas and his desire to achieve peace, tolerance and unity in his empire.
Zat and Sawar- Zat and Sawar were ranks in the mansabdari system. The zat rank etermine the number of soldiers under a mansabdar. The sawar rank determined the number of horses the mansabdar had to maintain. The zat and sawar ranks of a mansabdar determined his salary.
6. When Humayun died, Akbar was in Punjab, Humayun’s death was kept secret for 17 days, until Akbar could reach delhi, During this time a  courtier, dressed in robes, appeared at the window (jharokha) to show himself to the people. Why was it important to keep the news of Humayun’s death a secret till Akbar could reach Delhi?
At  the time of Humayun’s death, the Mughal Empire was at a nascent stage. Had the news of Humayun’s death leaked out before Akbar could reach Delhi, it would have given local rulers an opportunity to raise the banner of revolt and cause unrest.
7. ‘My father always associated with the learned of every creed and religion, especially with Pandits and the learned of India, and although he was illiterate….from his conversations with the learned and wise, no one could take him to be illeterate’.
a. Which Mughal Emperor is being referred to in the above paragraph?
Emperor Akbar is being referred to in the above paragraph.
b. What did this Mughal Emperor build to further his interest in learning about different religions?
Emperor Akbar built the IbadatKhana at FatehpurSikri to further his interest in learning about different religions.
c. What was the religious path suggested by this Mughal Emperor?
Di-i-ilahi, also called Tauhid-i-Ilahi. It was a religious path suggested by Akbar. It was a code of moral conduct reflecting Akbar’s secular ideas and his desire to achieve peace, tolerance and unity in his empire.

6. Monumental Architecture
E. Give shrt answers (in 20-40 words) for the following questions.
1. What kind of monument were built during the medieval period? Give examples to support your answer.
 Both religious and secular monuments were built during the medieval period.
Religious monuments included temples and mosques, while secular monuments included forts, palaces, tombs and wells.
2. List the different parts of a South Indian temple. Explain any two of them.
 The different parts of South Indian temple are gopuram, garbhagriha, mandapaanoshikara.
A ‘gopuram’ is the gateway of the temple. ‘Garbhagriha’ is the main shrine where images of the gods and goddesses were kept. The ‘mandapa’ was an audience hall where people gathered for prayers. On top of the main shrine was a  tall structure or tower called ‘shikhara’.
3. Which monument is considered to be a masterpiece of Indo-islamic architecture? Describe that monument.
 The QutubMinar is considered to be a  masterpiece of Indo-islamic architecture. QutubMinar is 72.5 metres high and has 378 stairs. It is largely built of red sandstone. It is today a UNESCO World Heritage Site.
4. Why are Mughal monuments grander and more magnificent than those built in the earlier period?
Mughal monument are grander and more magnificent than those of the earlier period because political stability in the empire enabled the emperors to pay attention to architecture. Second, the Mughals had more funds at their disposal to spend on monuments.
5. Write two distinguishing features of Mughal architecture?
 Some distinguish features of Mughal architecture are as follows.
1.  Arch and dome, specially full domes became common.
2.  The chaharbagh pattern was introduced.
3.  Some tombs and mosques have minarets.
6. What is pietra-dura? Who introduced it?
Pietra-dura is a technique of decoration in which precious and semi-precious stones are embedded in marble. Shah Jahan introduced this technique.
7. Who built the Bara Imambara? Why was it built?
NawabAsaf-ud-Daula built the Bara Imambara.BaraImambara was built to provide work to the famine – stricken people of Lucknow.
F. Give long answers(in 50-70 words) for the following questions.
1. Why did kings in medieval India build monuments?
The  kings in medieval India built monuments for the following reasons.
1. They wanted to impress others with their power, position and wealth.
2. They wanted to celebrate their victories in war.
3. They wanted to demonstrate their devotion to God.
4. they wanted to earn the goodwill of the people.

2. What do understand by Indo-Islamic style of architecture? What were its main features?
The Turksand the Afghans introduced new architectural styles. When these styles and techniques were used with the existing Indian styles, they gave birth to the Indo-Islamic style of architecture.
The Indo-Islamic style of architecture was characterized by the use of the arch and the dome. Minarets are also a characteristic feature of some monuments.
3. How did the regional kingdoms contribute to architecture?
The regional kingdoms made a lasting contribution to architecture. The monuments constructed by the regional kingdoms include the following.
a)   Gujarat- Jami Masjid. SidiSyyed Mosque
b)  Malwa- Jama Masjid, HindolaMahal
c)   Bengal- Adina Masjid, DakhiDarwaza
d)  Jaunpur- Atala Masjid
e)   Rajput Kingdoms- Mahendragarh Fort, Chittor Fort.
f)    QutubShahis- Golconda Fort, Char Minar
4. How were the monuments constructed by Shah Jahan different from those of Akbar and Jahangir?
Mughal architecture reached perfection under Shah Jahan. The monument he constructed were more uniform and symmetrical than those of his predecessors. Other differences include the following.
a)      Under Shah Jahan, white marble came to be used on a much larger scale. Under Akbar and Jahangir, red sandstone was the popular  building material.
b)      The use of domes and minarets became more common under Shah Jahan, than in the earlier period.
c)       The interior of monuments began to have arches, curved roots and multiple columns.
5. Kings wanted to earn the goodwill of the people and thus they constructed tanks and wells. In those days when people did not vote the kings to power, why was it necessary for them to earn tne goodwill of the people?
 It was necessary for kings to earn the good will of the people because they wanted to be accepted by the people. An unpopular king made it easier for local governors to ally the support of the people and overthrow that ruler. Thus goodwill measures helped the king to maintain peace and harmony in his empire. Accept this or any other relevant responses.
6. ‘ The monuments built by Shah Jahan were more opulent than those built by Aurangzeb.’ What does it tell you about the economic condition of the Mughal empire?
The opulent monuments constructed by Shah Jahanpoint  to a thriving economy, whereby Shah Jahan had sufficient funds at his disposal to spend on monuments. During Aurangzeb’s rule, the economy started declining on account of continuous wars. Thus, Aurangzeb could not divert  funds towards building opulent monuments
4. State Government
A.1. a                     2.d                          3. b                         4. C                         5.d
B. 1. False            2.False                  3.True                   4. True
C. Give short answers (in 20-40 words) for the following questions.
1.Why is the Legislative Council is called a permanent body
The Legislative Council is called a permanent body because it cannot be dissolved. Every second year, one-third of its members who complete their term retire.
2. How are representatives to the VidhanSabha elected? How have the territorial constituencies for Assembly seats been set up?
The VidhanSabha representatives are directly elected by the people from assembly constituencies with in the state.
The territorial constituencies for assembly seats have been set up in such a way as to ensure proportional representation of the population in the assembly.
3. What do you understand by ‘the Governor can hold office during the pleasure of the President’? What qualifications are needed to become the Governor of a state?      `                                               `
 The governor can hold office during the pleasure of the President means that the President can either remove the Governor anytime or can extend her/his term.
To become the Governor of the state, a person must be
a)     A citizen of India and at least 35 years of age,
b)    Should neither be a member of parliament of State Legislature nor hold any salaried government post.
4. Name the civil servants who carry out the administrative work in a state?
 The civil servants who carry out the administrative work in a state include the Chief Secretary, Secretaries, Deputy Secretaries, Under Secretaries, Directors, Deputy Directors, Divisional Commissioners and District Magistrates.
D. Give long answers (in 50-70 words) for the following questions.
1. How are members elected to the Legislative Council?
The Legislative Council is a part-nominated and part-elected body. Common people are indirectly involved in the election to the Council. The Local Authorities ‘constituencies elect one third of the members, the Graduates’ and Teachers’ constituencies elect one-twelfth each and the MLAs elect one third of the members, the Graduates’ And Teachers’ constituencies elect one- twelfth each and the MLAs elect one-third of the council members. The remaining seats are filled by people nominated by the Governor. Usually, renowned persons from various fields are nominated to the Council.
2. What are the steps involved in the process of a bill becoming an act?
 A draft or a bill is introduced either in the Legislative Assembly or in the Legislative Council of the state. It is discussed in the house and amendments are made, if necessary, before it is put to vote .If the bill is passed, it is sent to the governor for approval. It becomes an act only after the Governor signs it.
3. What are the discretionary powers of a Governor?
 The Governor possesses certain discretionary powers. She/he can make some decisions without consulting the Council of Ministers. If the ruling government has lost the confidence of the legislative assembly or the government machinery has broken down, the Governor can recommend President’s rule in the state. In such cases, the governor runs the state administration on the instruction of the President.
4. What are the functions of a Chief Minister?
He functions of the Chief Minister are as follows-
         i.            To advise the Governor on the selection of the council of Ministers and its size.
       ii.            To preside over cabinet meetings.
      iii.            To distribute portfolios among ministers.
     iv.            To appoint a Deputy Chief Minister, if needed.
       v.            To retain charge of some portfolios, if needed.
5. Write short note on- Council of Ministers, Advocate-Genral.
Council of Ministers- The council of ministers should not be more than 15% of the total strength of the legislative assembly. The council of ministers comprises the cabinet ministers, ministers of state and deputy ministers. It helps the chief ministers in the day to day administration of the state. It is collectively responsible to the Legislative assembly.
    The Advocate- General- The advocate general gives advice to the executive on legal matters and performs other legal function as assigned by the governor. She/he is appointed by the governor. Only a person qualified to be a high court judge is eligible for the post of the Advocate-General. The Advocate- General can take part in the proceedings of the state Legislature but does not have the right to vote.
6. Which candidate will have more power- elected or nominated? Why?
An elected candidate will have more power than a nominated candidate. This is because an elected candidate has been voted to power by the people. People have chosen that candidate to be their representative and govern the country on their behalf.
7. Why is it that at the state levels the Chief Minister is the ‘Head of the Government’ and the Governor is the ‘Head of the State’?
At the state level the Chief Minister is the ‘Head of the Government’ and the governor is the ‘Head of the State’ because the Governor is the nominal head. Her/ his powers and functions are similar to the President at the national level. The Chief Minister on the other hand, holds the responsibility for the smooth governance of the state. Accept this or any other relevant response.

D. Explain the following terms (30 words)
1. Environment                 2. Lithosphere                   3.Biosphere                        4.Ecosystem                                    5.Urbanization                     6. Pollution                        
1. The term environment is derived from the French word ‘environer’ which means to surround. Thus, the term environment refers to the external conditions in which an organism lives. It includes things created by nature and human beings.
2. The term lithosphere means rocky crust. The outermost layer of the earth which includes the crust and upper part of the mantle, and is made up of rocks and minerals is called the lithosphere.
3. Biosphere- The biosphere is a narrow zone where the lithosphere, hydrosphere and atmosphere meet and interact. It supports life on earth and is thus called the living world.
4. The complex system of interactions between different organisms and their physical environment in a particular area is called an ecosystem.
5. The number of people living in urban area as compared to the total population of the country is known as urbanization.
6. The disturbance caused to the environment due to the excessive exploitation of nature, urbanization and industrialization is called pollution.
E. give short answers (in 20-40 words) for these questions.
1. What is the importance of ecosystem?
The importance of an ecosystem is that it provides space to plants and animals to interactwith each other as well as with their physical environment.
2. Why did the Chipko Movement take place?
The Chipko movements took place as a protest against the indiscriminate cutting down of trees the Alaknanda river valley of Uttrakhand.
3. What are the reasons for environmental pollution?
 Some of the reasons for environmental pollution are:
a)      Exploitation and misuse of nature due to various human activities.
b)      Unplanned and unwise use of technology.
c)       Overpopulation and Urbanization and Industrialization.
4. How can natural environment be managed property?
 To manage the natural environment properly, a perfect balance should be maintained between the natural and human environment For this the help of scientists, technologists and planners is required to address the various environmental problems. Apart from this, we must understand and learn to live and use the environment in a harmonious way.
F. Give long answers (in 50-70 words) for these questions.
1. Explain the relationship between geography and environment.
 The study of geography includes the study of various natural and human-made components of the environment. It also studies the interrelationship between human being and their environment. Therefore, the relationship between geography and environment is very close.
2. Describe the main features of natural and human-made environment.
 Mountains, river, vegetation and animals are some features of natural environment. The feature of natural environment includes biotic and abiotic components. Agriculture, industries, settlements and means of transport which are created by human being are some of the features human made environment.
3. How have human needs undergone changes with the passage of time and technological development?
 Early humans adjusted themselves with their environment and fulfilled most of their needs from the available environmental resources. However, with time, the quality and quantity of human needs changed and thus they started developing techniques and new ways. Human settled in the fertile plains of the river valleys to cultivate land. They domesticated animals, learnt to use fire and invented the wheel.
4. What are the problems faced by the world today? How can we solve these problems?
 The problems faced by the world today are unplanned and unwise use of technology, overpopulation, urbanization and industrialization. All these factors result in environmental pollution by disturbing the balance between the natural and human environment.
We can solve these problems by maintaining a perfect balance between the natural and human environment.
5. Why do you think the earth is home to human beings and other organisms?
 Earth is the home of human being and other organism because it gives proper environment for the human being and organism to live on the earth. It provide natural habitat called ecosystem for all the living beings.
6. Why is the lithosphere very important for the progress  of human being?
The lithosphere provides land for agriculture as well as for building houses, roads and factories. It also gives us minerals. In this way lithosphere is very important for the progress of human being.
7. The earth would have been a barren planet without the atmosphere. Do you agree with this statement? Why?
Yes, I agree with this statement because atmosphere is very important source of life for all the human beings and living organism. Without atmosphere no one will be able to live on the earth, so it very correct to say that without atmosphere earth would be a barren planet.
8. Why do plants and animals depend on each other?
 Plant and animals depends on each other for their survival. Some animals feed on plants. Plants provide shelter and breeding ground to animals. Oxygen released by plants during photosynthesis is used by animals to breathe. On the other hand, the animals help plants in fertilization. Also the carbon dioxide given out by animals during respiration is used by green plants to carry out photosynthesis.
Distinguish between the following.
1. The difference between Crest and Trough is.
Crest
Crust
The rise of water in a wave is called crest.
The fall of water in a wave is called trough..

2. The difference between waves and tides are:
Waves
Tides
a.       The rise and fall of the surface water in the oceans and sea is called waves.
a. The alternate rise and fall in the level of sea and ocean water twice every day at regular intervals is called tides.
b.      Waves are formed when wind blows across the water surface.
b. Tides are caused due to gravitational pull of the moon and the sun on the surface of the earth.

3. The difference between spring tide and neap tide are:
Spring Tide
Neap Tide
a.       The phenomenon of the highest high tide and the lowest low tide is known as the spring tide.
a.       The phenomenon of very small rise or fall in sea water is known as neap tide.
b.      It occurs on full moon and new moon days.
       b.     It occurs on half moon day.

4. The difference between current and drift is:
Current
Drift
The movement of ocean water in the form of a stream, in a definite direction, on the ocean surface is called an ocean current.
A very broad ocean current is called drift.

E.Give short answers (in 20-40 words) for these questions.
1. Describe the general distribution of salinity in  the oceans.
The amount of dissolved salts present in sea and ocean water is known as salinity. The amount of salinity varies from one part of the ocean to another. Salinity is maximum near the tropical regions.
2. How do ocean current influence climate in the coastal areas?
The ocean currents influence climate in the coastal areas in the following ways
          i.           The warm and cold currents increase and decrease the temperature of the coastal areas respectively.
        ii.           The mixing of cold and warm currents causes dense fog.
       iii.           The warm current increase the moisture bearing capacity of the wind, while cold currents decrease the same.
3. Name the main currents of the Pacific Ocean?
 The main currents in the northern Pacific Ocean are:
a.      North Equatorial current
b.     North Pacific current
c.      Alaska Current
d.     California current
The main currents in the southern Pacific Ocean are:
a.       South Equatorial current
b.      East Australian current
c.       West wind drift
d.      Peru current
In between the North Equatorial current and the South Equatorial current flows the equatorial counter current.
4. What is a tsunami? How does it affect life in the coastal areas?
 Tsunami is a huge oceanic wave of about 20m to 30 m in height. It is generated when large mass of water is displaced due to undersea earthquake or volcanic eruption. In the coastal region tsunamis can damage houses and other structures. It also causes death due to drowning. 

F. Give long answers in (50-70 words) for these questions.
1. Explain the working of hydrological cycle with the help of a neatly labeled diagram.
 The continuous movement of water from the earth’s surface into atmosphere and back again to the earth’s surface is called the hydrological cycle or the water cycle. Due to evaporation, water from different water bodies changes into water vapour and reaches the atmosphere. In the atmosphere, due to loss of heat, water vapour changes into water drops through the process of condensation. These water drops then fall on the earth’s surface in the form of rain, snow or sleet.(Draw the diagram 7.1).
2. What are the causes for the occurrence of tides and currents?
 The gravitational pull of the moon and the sun on the surface of the earth causes the occurrence of tides. However  tides follow the apparent movement of the moon due to its proximity to the earth.
The causes for the occurrence of ocean currents are:
         i.            Variation in the temperature of ocean
       ii.            Variation in the density of ocean water.
      iii.            Direction of the prevailing winds.
     iv.            Rotation of the earth
3. What do you know about the importance of tides?
 The importance of tides is:
         i.            During high tides, when the depth of water at the mouth of rivers increases, it makes some rivers navigable for ocean-going vessels.
       ii.            Tides help to clear the sediments deposited on the river bed and thus prevent siltation of harbours.
      iii.            Tidal energy is used to generate electricity.
     iv.            During high tides fishes come near the coast and this helps the fishing industry to flourish.
       v.            During high tides seawater is stored in low-lying coastal areas and later used to make salt.
4. Write about the main effects of ocean currents. Give examples wherever possible.
The main effects of ocean currents are:
          i.           The warm and cold currents increase and decrease the temperature of the coastal areas respectively.
        ii.           Ocean currents determine the amount of rainfall along  the coastal areas.
       iii.           Ocean currents help in navigation as sailing ships go faster along a current.
      iv.           The areas where warn and cold currents meet make the best fishing grounds of the world as in Newfoundland and Japan.
        v.           In higher latitudes the warm currents keep the sea port ice free throughout the year.
5. Why is the ocean water salty?
 When rivers flow over land, they pick up minerals salt from the rocks and soil of the river beds. When the river reaches the ocean, it pours all the minerals into the ocean, thereby making the ocean water salty.
6. How do tides help trade and fishing?
 During high tide, when the depth of water at the mouth of rivers increases, it makes some rivers navigable for ocean-going vessels and also helps fishes to come near the coast. In this way tides help in trade and fishing.
7. In the coastal areas, the tsunami appears as a huge ball of water. Explain.

When the tsunami waves enter the shallow water of the coast, they slow down and their height increases. Thus in the coastal areas, the tsunami appears as a huge wall of water. 

Thursday, 1 September 2016

map 7th





Extra questions class 8th
1. What were hawelies
2. Describe a colonial bungalow during the early 20th century
3. In 1911 a grand Durbar was held by the British in Delhi,why?
4. Give a brief description of the viceroy palace.
5. Define  urbanization,deurbanisation, gulfaroshan.
6. What were the findings of the indigo commission?
7. Difference b/w Nij Cultivation and Ryoti Cultivation
8. Compare the three system of revenue introduced by British in India
9. What are the negative points of a democratic society
Ans  In a democracy power can be misused . sometimes the majority can undermine the minority. The citizens need certain rules to save themselves from folly.
10. Mention the key features of Indian Constitution
11. Define   universal adult franchise, secularism
12. Describe six fundamental rights .
13. Write a brief note on the struggle for freedom in Nepal.
14. Write a brief note on the making of Indian constitution.
15. Explain the process of Mining  Drilling and Quarrying.
16. lassifides the minerals
17. What are the two main classifications  of power resources? Give their examples.
18. What are the 3Rs stand for in context with conservation of natural resources/
.19. Distinguish between the following:-
1)   Actual and potential resource
2)    2) Abiotic and Biotic resource.
3)    3) Renewable resource and Non renewablel resource.
4)    4) Ubiquitious and Localized resource.
5)   Differentiate between Evergreen and Deciduous forest?
   20.List the principles of sustainable developm
    21.Explain the factors leading to water scarcity?


http://balbharatipp.org/notes/notes_2013-14/COMPREHENSIVE%20NOTES%20CLASS%208TH%20TERM%201.pdf
democracy why is universal adult franchise important?
Answer: Universal adult franchise is a very important aspect of democratic societies. 
It is promotes the idea of equality. It means that all adult (those who are 18 and above) citizens have the right to vote irrespective of their social or economic backgrounds.It  makes the government more accountable towards her people.
Q2: Re-read the box on Article 15 and state two ways in which this Article addresses inequality?
Answer:  
It states all citizens can go to public places like shops,cinema halls, restaurants etc. They cannot be stopped to enter these public places based on their caste, colour, religion or gender.It specifically mention that any citizen irrespective of his background can use wells, ponds, roads or public property or places funded by the government.
Q3: In what ways was Omprakash Valmiki’s experience similar to that of the Ansaris? 
Answer: 
Both of them suffer unequal treatment or discriminated at individual level because they belong to different caste or religion. Both these incidents also show though the law enforces equality but such inequalities exist within our society. In both cases, the dignity of the persons is not respected.
Q4: What do you understand by the term “all persons are equal before the law”? Why do you think it is important in a democracy?
Answer: The term 'All persons are equal before the law' means every citizen is entitled to all the constitutional rights and freedoms without making distinction of any kind, like gender, status, race, religion or place of birth.
It is a founding aspect of democracy. It ensures that government will take care about the needs of the all the citizens and fulfill them. It safeguards the interests of people.
Q5: Define Universal adult franchise
Answer: It means that all adult (those who are 18 and above) citizens have the right to vote irrespective of their social or economic backgrounds.

Q6: The Government of India passed the Disabilities Act in 1995. This law states that persons with disabilities have equal rights, and that the government should make possible their full participation in society. The government has to provide free education and integrate children with disabilities into mainstream schools. This law also states that all public places including buildings, schools, etc., should be accessible and provided with ramps.
Look at the photograph and think about the boy who is being carried down the stairs. Do you think the above law is being implemented in his case? What needs to be done to make the building more accessible for him? How would his being carried down the stairs affect his dignity as well as his safety?
Answer:  No the Disabilities Act is not being followed here. This is also a violation of Article 15 because physically disabled person cannot access public places. Building must have proper ramps, audio guidelines and other accessibility measures. The way boy being carried down the stairs affect his dignity and the method is unsafe. It affects his dignity because every time he has to depend on other persons. Carrying the wheel chair as shown in figure is dangerous. An unbalance can cause physical injury to the boy. This "charity based" approach has a negative impact on boy's mind.
It is important such needs be address through 'rights-based' approach i.e. all persons believe that they have equal share of the public resources.
Q7: What was the Civil Rights Movement in USA?
Answer: Civil Rights Movement began in USA in 1950s in which African–American people demanded equal rights and an end to racial discrimination.
Q8: What was the role of Rosa Parks in Civil Rights Movement in USA
Answer: Rosa Parks was an African–American woman who refused to give up her seat on a bus to a white man on 1 December 1955. It lead to huge agitation against the unequal ways in which African–Americans were treated and this later turned into the Civil Rights Movement.
Q9: How does Indian constitution ensures equality has been implemented?
                 OR
State the various provisions mentioned in the constitution to promote equality in
India.
Answer: Indian constitution has made provisions to ensure equality has been given.
Every person, from the President of the country to a common man, a domestic worker, has to obey the same laws. No person can be discriminated against on the basis of their religion, race, caste, place of birth or whether they are female or male.Person has access to all public places including playgrounds, hotels, shops and markets. All persons can use publicly available wells, roads and  bathing ghats.Untouchability has been abolished.
Q10: What are the different ways through which the government tries to implement the equality as prescribed in our constitution?
Answer: The government takes following measures to implement the equality as guaranteed by our constitution.
Through enacting new laws and enforcing these laws be followed. E.g. Disabilities Act 1995 was enacted to ensure safety and equality to physically disabled persons.By running various schemes and programmes to help disadvantaged communities. E.g.  Giving scholarships to poor students, mid-day meal programme for school kids.
Q11: How will you define equality?
Answer: It means giving fair treatment  to all human beings by the society and the state.
Q12: Does equality and diversity work together? Explain.
Answer: Yes diversity and equality work together.  Equality means giving fair treatment to people coming from diverse background (caste, colour or religion etc.). Equality states that we should treat people according to their different needs without being unfair to others. "One size fits all' theory cannot work. Diversity means respecting the difference. Equality means how to respect that difference.
One Size Fits All?
Q13: Which was the first state in India to introduce mid-day meal school in elementary government schools?
Answer: Tamil Nadu in 2011.
Q14: List few examples of inequalities common in India?
Answer: Inequalities prevalent in India are based:
Caste systemReligion Gender
Q15: Define the term 'Dalit'.
Answer: Dalit is a term sometimes used by lower castes to address themselves. Dalit means ‘broken’ and by using this word, lower castes are pointing to how they were, and continue to be, seriously discriminated against. 
Q16: Who is the author of the book 'Joothan'? What is the book about?
Answer: Omprakash Valmiki. it is the autobiography of the author. The book shares his experiences about the social and caste discrimination faced by him in his childhood.
Q17: What is midday meal scheme?
Answer:  The midday meal scheme refers to the programme introduced in all government elementary schools to provide children with cooked lunch.
Q18: Define Dignity.
Answer: refers to thinking of oneself and other persons as worthy of respect.