Weather and Climate

Samacheer Book Back Questions And Answers For Geography Standard 8 Full Book “Weather and Climate”

I Choose the correct answer:
1. Earth’s atmosphere contains about _____ percentage of nitrogen and oxygen.
a) 78% and 21%
b) 22% and 1%
c) 21% and 0.97%
d) 10% and 20%

2. _____ is generally defined as the average conditions of the weather of a place or a region.
a) earth
b) atmosphere
c) climate
d) sun

3. The earth receives energy from _____.
a) current
b) electromagnetic radiation
c) waves
d) heat

4. Which one the following represents places with equal amount of rainfall?
a) isotherm
b) isohel
c) isobar
d) isohytes

5. _____ is used to measure the humidity.
a) anemometer
b) barometer
c) hygrometer
d) thermometer

II Fill in the blanks:
1. _____ refers to the condition of atmosphere for a short period of time.
2. The scientific study of weather is called _____.
3. The highest temperature ever recorded on the earth is _____.
4. _____is a ratio between the actual amount of water vapour and the maximum amount of water vapour the air can hold.
5. _____ and _____are measured by anemometer and wind vane respectively.
6. _____are imaginary lines which connect the same temperatures of different places.

Answers:
1. Weather
2. Meteorology
3. 56.7°C in in USA
4. Humidity
5. Wind direction and wind speed
6. Isotherms

III Match the following:
1. Climate                   A. Locating and Tracking Storms
2. Isonif                      B. Cyclone
3. Hygrometer           C. Equal Snowfall
4. Radar                     D. Long Term Changes
5. Low Pressure         E. Humidity

Answers:
1. D
2. C
3. E
4. A
5. B

IV State whether the following statements are True or False:
1. The atmosphere is a layer of gases surrounding the planet.
2. The Scientific study of weather is called Climatology.
3. Isohel refers equal sunshine.
4. Humidity is calculated by Aneroid Barometer.

Answers:
1. True
2. False (Climate)
3. True
4. False (Air Pressure – Aneroid Barometer, Humidity – hygrometer)