# NCERT Class VII: Science-Exercise Solutions

### Chapter 08-Winds, Storms and Cyclones-Exercise Solutions

NCERT Book Exercise Page Number-92
Q.1. Fill the missing word in the blank spaces in the following statements:
(a) Wind is________ air.
(b) Winds are generated due to_______ heating on the earth.
(c) Near the earthâ€™s surface __________air rises up whereas ___________ air comes down.
(d) Air moves from a region of _______ pressure to a region of_____ pressure.
(a) Wind is moving air.
(b) Winds are generated due to uneven heating on the earth.
(c) Near the earthâ€™s surface warm air rises up whereas cooler air comes down.
(d) Air moves from a region of high pressure to a region of low pressure.
Q.2. Suggest two methods to find out wind direction at a given place.
The two methods to find out in which direction wind is blowing are as follows:-

i. If we fly a kite, the direction in which kite flies tells about the direction of the wind.

ii. When we put our clothes to dry, the direction in which clothes will be carried away tells about the direction of the wind.

Q.3. State two experiences that made you think that air exerts pressure
(Other than those given in the text).
Answer: Two experiences which make us think that air exerts pressure are as follows:-
(i) When we inflate a balloon, after sometime even if we blow air the balloon wonâ€™t inflate any more. It might burst but will not inflate because air exerts pressure.
(ii) When we open the window panes the curtains tend to move, this movement is due to the pressure exerted by the wind.