Question

The rainfall which is experienced by the Amazon river basin every afternoon is called the …………………..
A. 3 o’clock rainfall
B. 4 o’clock rainfall
C. 5 o’clock rainfall
D. 6 o’clock rainfall

Answer 1

Hint:
Convectional rainfall occurs when the energy of the sun heats the surface of the earth, causing water to evaporate to form water vapour. When the land heats up, it warms the air above it. This causes the air to expand and rise. As the air rises, it cools and condenses. This process of condensation forms clouds, rainfall will occur.

Complete answer:
Option A) 3 o’clock rainfall – is an incorrect answer because this is not rainfall which is experienced by the Amazon river basin every afternoon. There is no such rainfall which is called 3 o’clock rainfall.

Option B) 4 o’clock rainfall – is a correct answer because 4 o’clock rainfall is known as the convectional rainfall which is experienced by the Amazon river basin every afternoon. A convectional rainfall occurs when the energy of the sun heats the surface of the earth, causing water to evaporate and form water vapour. When the land heats up, it warms the air above it. This causes the air to expand and rise. As the air rises, it cools and condenses. This process of condensation forms clouds, rainfall will occur. It occurs daily in the equatorial regions.

Option C) 5 o’clock rainfall – is an incorrect answer because this is not the rainfall which is experienced by the Amazon river basin every afternoon. There is no such rainfall. It is an incorrect answer.

Option D) 6 o’clock rainfall – is an incorrect answer because 6 o’clock is an evening time. It is not afternoon rainfall which is experienced by the Amazon river basin. It is incorrect, therefore.

Therefore, the correct answer is B

Note:
The type of rainfall that is likely to be referred to here is convectional rainfall which develops as warm, moist columns of rising air begin to condense.