MCQ Class 9 Science Exploration Chapter 13 Earth as a System: Energy, Matter, and Life

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1. Uneven heating causes:

Question 1 of 20

2. Atmosphere is mainly composed of:

Question 2 of 20

3. Weather occurs mainly in:

Question 3 of 20

4. Temperature in troposphere:

Question 4 of 20

5. Ozone layer is in:

Question 5 of 20

6. Ozone protects Earth from:

Question 6 of 20

7. Greenhouse effect keeps Earth:

Question 7 of 20

8. Without atmosphere Earth would be:

Question 8 of 20

9. Wind moves from:

Question 9 of 20

10. Valley breeze occurs during:

Question 10 of 20

11. Mountain breeze occurs during:

Question 11 of 20

12. Planetary winds are caused by:

Question 12 of 20

13. Ocean currents are:

Question 13 of 20

14. Warm currents move toward:

Question 14 of 20

15. Cold water flows:

Question 15 of 20

16. Gyres rotate clockwise in:

Question 16 of 20

17. Biogeochemical cycles involve:

Question 17 of 20

18. Water cycle includes:

Question 18 of 20

19. Condensation forms:

Question 19 of 20

20. Carbon is essential for:

Question 20 of 20


 

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