The process of absorption of water by the soil is known as percolation. The percolation rate is the amount of water absorbed by any soil at any given time. P e r c o l a t i o n r a t e = a m o u n t o f w a t e r ( m L ) p e r c o l a t i o n t i m e ( m i n )

The process of the removal of topsoil from the land by strong winds or by flowing water is called soil erosion. Soil erosion occurs easily in those areas of land which are not covered by vegetation (trees and other plants) or have very little vegetation.

E M B I B E

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q E

MEDIUM

7th CBSE

IMPORTANT

Earn 100

Define percolation.

Important Questions on Soil

MEDIUM

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q E

Define soil erosion.

MEDIUM

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q E

Define soil pollution.

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7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q F

What are the different factors that affect the soil?

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7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q F

Neelam took 200 g soil. She placed it on a newspaper in the Sun and allowed it to dry for 2 hours. After drying it, she observed that the weight of the soil is reduced to 190g. Calculate the percentage of moisture in the soil sample.

HARD

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q F

What are the causes for soil erosion?

HARD

7th CBSE

IMPORTANT

LEARNING edge SCIENCE and TECHNOLOGY 7>Chapter 9 - Soil>Worksheet SA>Q F

Explain how soil erosion can be prevented.

HARD

7th CBSE