Question

Fill the missing word in the blank spaces in the following statements:
(a) Wind is $\underset{–}{}$ air.

(b) Near the earth’s surface $\underset{–}{}$ air rises up whereas $\underset{–}{}$ air comes down.

(c) Air moves from a region of $\underset{–}{}$ pressure to a region of $\underset{–}{}$ pressure.

Answer 1

(a) Wind is $\underset{–}{moving}$ air. If there is any motion in the air, it can be called as wind.


(b) Near the earth's surface $\underset{–}{warm}$ air rises up whereas $\underset{–}{cold}$ air comes down.

The reason for this is that the warm air is lighter than cold air.

(c) Air moves from a region of $\underset{–}{high}$ pressure to a region of $\underset{–}{low}$ pressure. Winds flow due to the pressure difference in the direction from higher pressure regions to lower pressure regions.