Page 147 - English Class 9

B. Choose the correct answer.

a. How did people get the weather information until the 18
th
century?

i. with weather instruments ii. through their physical senses

iii. through their intuitions

b. Which one of the following barometers is the latest one?

ii. digital ii. mercury iii. aneroid
c. What does a barometer measure?

i. atmospheric temperature ii. atmospheric humidity

iii. atmospheric pressure

d. Which of the following devices is NOT used to get weather
information?

i. thermometer ii. galvanometer iii. anemometer

e. Which of the following devices is used to measure the speed of
the wind?

i. wind wave ii. anemometer iii. hygrometer

C. Answer the following questions.

a. Where is an alcohol-filled thermometer mostly used?

b. What is a barometer used for?

c. What are the two kinds of hygrometer?

d. Give two examples of how an anemometer gives information
about the weather.

e. Name the device that is used to measure the changes in weather
conditions.
f. What precaution should be taken while using a rain gauge?

D. How do you usually find out what the weather will be like?
Talk to your friends.
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