GSI MANTRA

Class 9 • Social Science • Chapter 3

Chapter 3 — Atmosphere and Climate

Chapter 3 Test • English Medium

Time: 1 Hour Maximum Marks: 40
Name: ____________________ Class: IX
Section A — Multiple Choice Questions

Question 1. Choose the correct option. (10 × 1 = 10)

1. Which gas is present in the largest proportion in the atmosphere?
(A) Oxygen
(B) Nitrogen
(C) Carbon dioxide
(D) Hydrogen
2. Most weather phenomena occur in which layer?
(A) Stratosphere
(B) Mesosphere
(C) Troposphere
(D) Exosphere
3. The ozone layer is mainly associated with the:
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Exosphere
4. Winds generally move from:
(A) Low pressure to high pressure
(B) High pressure to low pressure
(C) North to south only
(D) East to west only
5. The amount of water vapour present in the air is called:
(A) Precipitation
(B) Humidity
(C) Pressure
(D) Temperature
6. The long-term pattern of weather is called:
(A) Weather
(B) Climate
(C) Precipitation
(D) Wind
7. The process by which water vapour changes into water droplets is:
(A) Evaporation
(B) Condensation
(C) Precipitation
(D) Radiation
8. Which seasonal wind system is especially important for India's climate?
(A) Monsoon
(B) Polar winds
(C) Local winds
(D) Westerlies only
9. Which of the following is a greenhouse gas?
(A) Carbon dioxide
(B) Oxygen
(C) Nitrogen
(D) Argon
10. The total greenhouse gas emissions associated with an activity are commonly described as its:
(A) Air pressure
(B) Carbon footprint
(C) Humidity
(D) Precipitation
Section B — Very Short Answer Questions

Question 2. Answer the following in 20–30 words. (5 × 2 = 10)

  1. What is the atmosphere?
  2. Write one difference between weather and climate.
  3. What is air pressure?
  4. What is humidity?
  5. What is the greenhouse effect?
Section C — Short Answer Questions

Question 3. Answer any three. (3 × 3 = 9)

  1. Briefly describe the major layers of the atmosphere.
  2. Write three factors that affect temperature.
  3. How are winds generated?
  4. Explain the importance of the Indian monsoon for agriculture.
Section D — Long Answer Question

Question 4. Answer any one. (1 × 5 = 5)

  1. Differentiate between weather and climate and explain the major factors that influence climate.
  2. What is climate change? Explain its major causes and suggest measures to reduce its impact.
Section E — Match the Following

Question 5. Match Column A with Column B. (3 × 2 = 6)

Column A Column B
1. Troposphere A. Amount of water vapour
2. Humidity B. Most weather phenomena
3. Stratosphere C. Ozone layer
Test Completed — Best of Luck!
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GSI MANTRA
Class 9 Social Science • Chapter 3 Test