Revision Assignment: Week 4 Class: VII Subject: Social Science
1.This assignment consists of 50 MCQs.
2.Each question carries 1 mark.
3.Last date of submission: June 26, 2021 by 9:00 pm.
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1. The people who worked hard to save and protect the environment are called _________ . *
1 point
metereologists
environmentalists
geologists
2. Which layer prevents the harmful ultraviolet rays of the Sun? *
1 point
Stratosphere
Troposhpere
Ozone
3. __________ is causing ecological imbalance and climate change. *
1 point
Unplanned deforestation
Global warming
Atmospheric pressure
4. Untreated liquid waste from the factories is ________ our rivers. *
1 point
saving
polluting
protecting
5. _________ have affected the atmosphere adversely and disturbed the natural balance in the Environment. *
1 point
Human Activities
Flaura
Fauna
6. The ____________ determines the food we eat, the clothes we wear, the occupation we get. *
1 point
atmosphere
environment
lithosphere
7. People in the coastal areas eat __________ . *
1 point
Rice and Fish
Rice and bajra
Rice and wheat
8. The vast variety of life on Earth from human beings, huge animals, trees and plants to small microscopic organisms is known as _________ . *
1 point
petrology
biodiversity
anthropology
9. The living part of the environment is called _______ component . *
1 point
biotic
abiotic
microbes
10. _________ supports all sorts of life on Earth. *
1 point
Water
Air
Land
11. Which realm is an important source of food, energy and minerals? *
1 point
Air
Water
Ozone layer
12. Atmospheric pollution is caused when forests are cleared by _________ . *
1 point
planting trees
conserving trees
burning Trees
13. Pollution is the addition of substances to the environment that may be harmful to __________ . *
1 point
living organisms
non living organisms
both of the above
14. More than 70 percent of the Earth's surface is covered with __________ . *
1 point
air
land
water
15. Who cultivated the slopes of mountains where agriculture was not possible? *
1 point
Anthropologists
Humans
Animals
16. What is the meaning of realms of the Earth? *
1 point
An area or a domain
Volcanoes
Glaciers
17. ________ is the source of all the humidity present in the air. *
1 point
Water
Air
Nitrogen
18. An envelope of air surrounding the Earth is known as ____________ . *
1 point
lithosphere
hydrosphere
atmosphere
19. The study of weather and its elements is known as _________ . *
1 point
petrology
meteorology
minerology
20. _________ is the mixture of gases forming the bulk of atmosphere. *
1 point
Air
Ozone
Pollution
21. The degree of hotness or coldness of air is known as ___________ . *
1 point
altitude
latitude
temperature
22. Which two gases make the bulk of the atmosphere? *
1 point
Carbon dioxide and helium
Oxygen and nitrogen
Ozone and hydrogen
23. _____________ regulates the temperature of the earth. *
1 point
Atmosphere
Troposphere
Stratosphere
24. Rise in the temperature of the earth is called ___________ . *
1 point
global warming
volcanic eruption
evaporation
25. Why oxygen is called a life-supporting gas? *
1 point
Essential for breathing
Essential for plants
None of the above
26. All living organisms, plants and animals live in ___________zone. *
1 point
biosphere
ionosphere
exosphere
27. Which are the most important occupants of the biosphere? *
1 point
Human Beings
Species
Fossils
28. _________ is the only planet in the Solar system where living conditions are favourable for a life. *
1 point
Earth
Mars
Neptune
29. Which human activities have led to the pollution of the Environment? *
1 point
Deforestation
Afforestation
Cultivation
30. ________ is celebrated as the Earth day? *
1 point
22 April
24 April
24 June
31. World Environment day is held on ________ every year. *
1 point
June 5
August 15
July 18
32. Name the zone where the three realms of Earth- land, water and air meet. *
1 point
Lithosphere
Hydrosphere
Biosphere
33. Which landform is not found in lithosphere? *
1 point
Mountains
Glaciers
Plains
34. Recognize the picture. *
1 point
Captionless Image
Ecosystem
Precipitation
Global warming
35. Who has changed the face of the earth by making dams and bridges? *
1 point
Animals
Ancestors
Humans
36. Name one of the famous environmentalist who started Narmada Bachao Andolan ? *
1 point
Salim Ali
Medha Patkar
Rajendra Singh
37. The purpose of World Environment Day is to spread ________ about the threat of the environment due to rising pollution. *
1 point
awareness
ignorance
insensitivity
38. Air, land, water and temperature are _________ factors. *
1 point
abiotic
biotic
living
39. _______ contains gases, dust and water vapour. *
1 point
Atmosphere
Hydrosphere
Lithosphere
40. We can save our environment by following which ways? *
1 point
Save water and electricity
Cutting trees
Increase Carbon dioxide
Answers
Answered by
3
Answer:
1 environmentalists
Explanation:
2 ozone
3 Global warming
17 Water 40 save water and electricity
Answered by
2
Answer:
Explanation:
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