1. The thickness of the troposphere increases in
A. Summer
B. winter
C. spring
D. autumn
2. Which one is an anti-cyclone?
A. Low pressure system with clockwise winds in the northern hemisphere
B. High Pressure system with clockwise winds in the northern hemisphere
C. Low pressure system with clockwise winds in southern hemisphere
D. High pressure system with clockwise winds in southern hemisphere
3. The order of the layers in the atmosphere, upward from below, is
A. stratosphere, troposphere, ionosphere and exosphere
B. exosphere, ionosphere, troposphere and stratosphere
C. troposphere, stratosphere, ionosphere and exosphere
D. troposphere, magnetosphere, stratosphere and exosphere
4. The atmosphere layer which reflects radio waves is known as
A. Ionosphere
B. Exosphere
C. Stratosphere
D. Troposphere
5. Which one of the following has the highest wind velocity?
A. Hurricane
B. Tornado
C. Typhoon
D. Thunderstorm
6. Which one of the following layers of the atmosphere contains water vapour and dust particles?
A. Ionosphere
B. Mesosphere
C. Stratosphere
D. Troposphere
7. Willy-willy is the tropical cyclone occuring in
A. China sea
B. Caribbean sea
C. Coast of North-west Australia
D. Gulf of Mexico
8. Ozone layer is found in
A. Troposphere
B. stratosphere
C. Mesosphere
D. Ionosphere
9. Trade winds are caused by
A. revolution of the earth
B. rotation of the earth
C. inflowing movement of air alone the earth's surface towards the equator
D. none of the above
10. Most of the active volcanoes in the world are found around
A. Atlantic Ocean
B. Pacific Ocean
C. Arctic Ocean
D. Indian Ocean
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