Question

what is soil and how it is formed

Answer 1

soil is the most important renewable resource.it is the medium of plant growth and supports different types of living organisms on the earth.
relief,parent rock, climate, vegetation and other forms of life and time are important factors responsible for soil formation.
various sources of nature such as change in temperature,actions of running water, winds and glaciers, activities of decomposes, etc. contribute to the formation of soil are equally important.

Answer 2

What is meant by soil?

soil is a dark brown (or black) solid material, which is a mixture of 'rock particles of different sizes' and decayed plant & animal matter called 'humus'.

How is soil formed?

soil is formed from rocks by the process of weathering. In weathering, rocks are broken down very slowly by the action sun's heat, wind, rain, flowing water, etc., to form tiny rock particles. These tiny rock particles then mix up with humus to form fertile soil. The nature of any soil depends on the rocks from which it has been formed and the type of vegetation that grows in it.

Describe an activity to show that soil contains water:

we take some dry soil in a hard glass beaker and cover it with a lid. Heat the beaker by using a burner. We will see that tiny drops of water are formed on the inner side of the lid. This shows that even the soil which appears to be dry to us, contains some water.

Name their types?

there are 3 types of soil:

1. sandy soil
2. clayey soil
3. loamy soil