Question

Give reasons :

1. Infiltration of water is low in the region of non – porous soil.

2. Fresh water is less on the earth.

3. Snowfall is common in the polar region and mountainous regions.

Answer 1

1. Water entering the soil at the surface of the ground is termed as infiltration. Infiltration allows the soil temporarily to store water, the rate of infiltration is influenced by the physical characteristics of the soil, vegetative cover, moisture content of the soil, soil temperature and rainfall intensity.

2. Most of the water on the earth is saline and is found in seas and oceans, which constitutes about 97.2%.

3. 1. The precipitation in the form of powdery mass of ice is known as snowfall.

2. Often water vapour in a cloud is converted directly into snow pieces due to lowering of temperature.

3. It is common in the polar and high mountainous regions.