Question 1.
The quantity of oxygen in the air is:
(a) 78%
(b) 21%
(c) 15%
(d) 10%
Question 2.
Ozone layer is found in:
(a) Troposphere
(b) Mesosphere
(c) Thermosphere
(d) Stratosphere
Question 3.
Which gas creates a greenhouse effect?
(a) Nitrogen
(b) Oxygen
(c) Argon
(d) Carbon dioxide
Question 4.
Ionosphere is a part of:
(a) Troposphere
(b) Mesosphere
(c) Thermosphere
(d) Stratosphere
Question 5.
What was invented by Anders Celsius?
(a) Barometer
(b) Thermometer
(c) Rain gauge
(d) None of the above
Question 6.
Which winds change their direction in different seasons?
(a) Permanent winds
(b) Seasonal winds
(c) Local winds
(d) None of the above
Question 7.
Which layer is the upper most layer?
(a) Troposphere
(b) Mesosphere
(c) Thermosphere
(d) Exosphere
Question 8.
Which gas is available most plentiful in the air?
(a) Nitrogen
(b) Oxygen
(c) Argon
(d) Carbon dioxide
Question 9.
Degree of hotness and coldness of the air is called:
(a) Humidity
(b) Pressure
(c) Temperature
(d) Insolation
Question 10.
Atmospheric pressure is measured by:
(a) Barometre
(b) Thermometer
(c) Rain gauge
(d) None of the above
Question 11.
Which of the following gases protects us from harmful sun rays?
(a) Carbon dioxide
(b) Nitrogen
(c) Ozone
(d) All of these
Question 12.
In which direction the wind blows constantly throughout the year in particular direction?
(a) Permanent winds
(b) Local winds
(c) Seasonal winds
(d) Both (a) and (b)
Question 13.
In which layers all weather phenomenon occurs?
(a) Troposphere
(b) Stratosphere
(c) Thermosphere
(d) Mesosphere
Question 14.
What is the result when the air is heated?
(a) Heavier
(b) Lighter
(c) Colder
(d) Warmer
Question 15.
Which is the most important layer of the atmosphere?
(a) Troposphere
(b) Thermosphere
(c) Mesosphere
(d) None of these
Question 16.
What is air pressure?
(a) Pressure exerted by the wind
(b) Pressure exerted by the rain
(c) Pressure exerted by the weight of air
(d) None of these
Question 17.
Name the types of rainfall?
(a) Cyclonic
(b) Orographic
(c) Convectional
(d) All of the above
Question 18.
What do you mean by weather?
(a) Incoming solar energy
(b) All condition of the atmosphere
(c) Both a and b
(d) None of these
Question 19.
How ozone layer is important to us?
(a) Protect us from weather changes
(b) Protect us from harmful rays
(c) Protect us from rain
(d) None of these
Question 20.
Which gases make the bulk of the atmosphere?
(a) Nitrogen
(b) Oxygen
(c) Both a and b
(d) None of these
Match the following
1.
| Column I | Column II |
| 1. Mesosphere | (a) 13 km. |
| 2. Thermosphere | (b) 50 km. |
| 3. Exosphere | (c) 80 km. |
| 4. Stratosphere | (d) 80-400 km. |
| 5. Troposphere | (e) Beyond 400km. |
Fill in the blanks
1. The quantity of nitrogen in atmosphere is ……………. .
2. Wind vane shows the direction of the ……………. .
3. In the atmosphere, percentage of oxygen is ……………. %.
4. When we inhale, we take some amount of ……………. into our lungs and exhale it.
5. ……………. play an important role for plants to take nitrogen from air.
6. The increased volume of carbon dioxide is affecting the earth�s ……………. and ……………. .
7. ……………. layer helps in radio transmission.
8. Light gases like helium and hydrogen float into the space in ……………. layer.
9. The most important layer is ……………. .
10. Standard unit �Degrees Celsius� for measuring temperature invented by ……………. .
Picture Based Questions
1. Draw the structure of atmosphere.
2. Draw major pressure belts and wind system
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