The following is how rain is formed. The airis filled with tiny particles known as vapour.
Vapour is actually the gaseous form of water.
The air around us is constantly moving because
the air near the surface of the Earth is hotter
and lighter. This is why this air rises. The air
higher up in the sky is cold and heavy, so it
sinks. The rising of air and the sinking of cold
water cause the air to move. When the hot of
air rises to a certain level, the vapour presents
in it, cools and changes to water. This is known
as condensation. When the water particles are
too heavy for the air to carry, the air is said to
be oversaturated. The water particles then fall
as rain.
تب و م
9. What is the purpose of the text?
A. To show the form of rain.
B. To explain how rain is formed.
C. To show what rain looks like.
D. To explain what causes rain.
E. To describe rain.
10. What is vapour?
A. A very tiny particle.
The gaseous form of water.
C. A part of gas.
The hot air.
E. A heavy particle of air.
11. When is the air called to be oversaturated?
A. When the water particles falls as rain.
B. When the vapour changes into water.
C. When the water particles are too heavy
for the air to carry.
D. When the hot air rises to a certain level.
E. When the air moves.