Important Questions for Nature's Treasures

Multiple Choice Questions

1. Which is these is a natural resource?
(a) Plastic
(b) Crude oil
(c) Glass
(d) Cement

2. Which of these is a renewable resource?
(a) Petroleum
(b) Coal
(c) Natural gas
(d) water

3. Which gas do we get from plants during photosynthesis?
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen
(d) Hydrogen

4. What is the % of oxygen in air?
(a) 78%
(b) 21%
(c) 1%
(d) 50%

5. Which gas occupies 78% of air?
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Argon

6. What do we call moving air?
(a) Cloud
(b) Wind
(c) Storm
(d) Breeze

7. Which windmill farm is located in Tamil Nadu?
(a) Muppandal wind farm
(b) Jaisalmer wind farm
(c) Brahmanvel Wind Farm
(d) Pune wind farm

8. What is the largest component of air?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Argon

9. What does air contain in small quantities besides nitrogen and oxygen?
(a) Argon and carbon dioxide
(b) Water and soil
(c) Sunlight and wind
(d) Trees and plants

10. What happens when you hold your breath for a long time?
(a) You feel more energetic
(b) The body does not get enough oxygen
(c) Your heart stops immediately
(d) You start flying

11. Which of the following is not a gas found in air?
(a) Nitrogen
(b) Oxygen
(c) Carbon dioxide
(d) Sulfur

12. What percentage of air is made up of gases other than nitrogen and oxygen?
(a) 50%
(b) 1%
(c) 21%
(d) 78%

13. Why is soil essential for plants?
(a) It is colorful
(b) It helps plants to grow
(c) It clothes the earth
(d) It makes sounds

14. Forests help in controlling:
(a) Traffic
(b) Air pollution
(c) TV signals
(d) Buildings

15. Which of these is NOT a natural resource?
(a) Water
(b) Wood
(c) Iron
(d) Brick

16. The layer of air around the Earth is called:
(a) Lithosphere
(b) Atmosphere
(c) Biosphere
(d) Hydrosphere

17. Which natural resource is used to generate hydroelectricity?
(a) Sun
(b) Wind
(c) Water
(d) Coal

18. Which of these is an exhaustible resource?
(a) Air
(b) Soil
(c) Petroleum
(d) Sunlight

19. Which natural resource gives us rainfall?
(a) Water cycle
(b) Sunlight
(c) Wind
(d) Soil
20. Which gas is necessary for breathing?
(a) Nitrogen
(b) Carbon dioxide
(c) Oxygen
(d) Helium

21. What is made from crude oil?
(a) Petrol
(b) Water
(c) Coal
(d) Minerals

22. Which of the following helps in cleaning the air?
(a) Trucks
(b) Trees
(c) Air conditioners
(d) Chimneys

23. Rocks and minerals are part of:
(a) Atmosphere
(b) Biosphere
(c) Lithosphere
(d) Hydrosphere

24. Which of the following is a living natural resource?
(a) Iron
(b) Coal
(c) Trees
(d) Water

25. What is the best way to save natural resources?
(a) Use more plastic
(b) Cut more trees
(c) Recycle and reuse
(d) Waste electricity

26. Which of these is fossil fuel?
(a) Wind
(b) Sunlight
(c) Wood
(d) Petrol

27. The main source of energy for Earth is:
(a) Water
(b) Wind
(c) The Sun
(d) Soil

28. Which gas do humans exhale?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Helium

29. Wind energy is a:
(a) Non-renewable resource
(b) Renewable resource
(c) Man-made resource
(d) Harmful resource

30. Soil becomes fertile due to:
(a) Plastics
(b) Stones
(c) Sand
(d) Organic matter

31. what do living beings need for survival?
(a) Nature's treasures
(b) Money
(c) Machines
(d) Buildings

32. How long can a person stay alive without breathing oxygen?
(a) A few hours
(b) A few days
(c) A week
(d) A few minutes

33. Why is oxygen essential for humans?
(a) It helps in digestion
(b) It makes us taller
(c) It is required for the body's functions
(d) It gives us energy to run fast

34. Why is water considered precious?
(a) It is colorful
(b) Fresh water is limited and essential
(c) It tastes sweet
(d) It is found everywhere

35. Rainwater harvesting is ?
(a) Collecting and storing rainwater for future use
(b) Drinking rainwater directly
(c) Painting rooftops
(d) Boiling rainwater

Short Answer type

1. Name some gases present in air.
Answer: Nitrogen, oxygen, argon, carbon dioxide, and other gases.

2. What is moving air called?
Answer: Wind

3. What is similar in a windmill and a pinwheel?
Answer: Both rotate with the help of wind.

4. What are fossil fuels?
Answer: Fuels like petroleum, natural gas, and coal formed from remains of plants and microorganisms over millions of years.

5. Why is oxygen essential for survival?
Answer: Oxygen is required for the body's functions.

6. What is rainwater harvesting?
Answer: Collecting and storing rainwater for future use.

7. Why must we conserve water?
Answer: Fresh water is limited and essential for life.

8. What makes soil fertile?
Answer: The decay of leaves and organic matter enriches the soil with nutrients.

9. What are natural resources?
Answer: Resources provided by nature like air, water, soil, plants, and animals.

10. What is the difference between renewable and non-renewable resources?
Answer: Renewable resources can be replenished naturally within a reasonable time, non-renewable resources cannot.

11. Name some renewable resources.
Answer: Air, water, sunlight, forests.

12. Name some non-renewable resources.
Answer: Coal, petroleum, natural gas, minerals.

13. How do forests help the environment?
Answer: Forests provide food and shelter to animals and help maintain ecological balance.

14. What are the effects of cutting down large forest areas?
Answer: Loss of biodiversity, soil erosion, and disruption of ecological balance.

15. What is a windmill farm?
Answer: An area with many windmills generating electricity using wind energy.

16. Why do plants need sunlight?
Answer: For photosynthesis to create food.

17. What causes air pollution?
Answer: Smoke, vehicle emissions, industrial pollution.

18. How can air pollution be reduced?
Answer: Using electric vehicles, planting more trees.

19. Who did Bhoomi and Surya visit during their school vacation?
Answer: Their Ajji (grandmother) who lives in a village near the forest in the Western Ghats.

20. What are some of the treasures of nature mentioned by Ajji?
Answer: Pure air, fertile soil, plenty of sunlight, and different varieties of trees.

21. What activity does Ajji suggest to get more fresh air in the lungs?
Answer: Breathing exercises with deep breaths.

22. What is the composition of air in percentage?
Answer: 78% nitrogen, 21% oxygen, and 1% argon, carbon dioxide, and other gases.

23. What are the uses of windmills?
Answer: Running flour mills, pulling water from wells, and generating electricity.

24. What are some traditional methods of rainwater harvesting in India?
Answer: Stepwells (bawadi), trenches lined with stones allowing water seepage.

25. What is the significance of the Van Mahotsav?
Answer: It is a forest festival aimed at planting trees and raising awareness for forest conservation.

26. How do the roots of plants help the soil?
Answer: They hold the soil together and prevent soil erosion.

27. What role do leaves play when they fall and decay?
Answer: They enrich the soil by adding nutrients.

28. Why is soil important for plants?
Answer: It provides air space and nutrients essential for roots to grow.

29. What are earthworms' role in the soil?
Answer: They help in turning and loosening the soil, improving its quality.

30. How are rocks and minerals used by humans?
Answer: For construction, making tools, electronics, jewelry, and other products.
31. Why should we reduce the use of fossil fuels?
Answer: Because they are limited and cause pollution when burnt.

32. What are renewable resources?
Answer: Resources that get replenished naturally over time, such as air, water, forests, and sunlight.

33. What are non-renewable resources?
Answer: Resources that do not get replenished quickly enough, such as coal, petroleum, natural gas, and minerals.

34. How can we contribute to saving natural resources?
Answer: By using them wisely, conserving water, planting trees, and reducing pollution.

35. What is soil made of?
Answer: Sand, minerals, organic matter, insects, earthworms, and decayed plants and animals.