Q3 of 9 Page 92

State two experiences that made you think that air exerts pressure (other than those given in the text).

Two experiences that depict the air exerts pressure are:


(i) It is difficulty to ride a cycle against the direction of the wind. It shows that the air exerts pressure.


(ii) It is difficulty to row a sailboat against the direction of the wind but it is much easier in the direction of the wind. It also shows that the air exerts pressure.


More from this chapter

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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 earth's surface ________ air rises up whereas _________ air comes down.


(d) Air moves from the region of __________ pressure to a region of __________ pressure.

 2

Suggest two methods to find out wind direction at a given place.

 4

You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answers.

 5

Explain why holes are made in hanging banners and hoardings.