How is soil formed ? Describe an activity to show that soil contains water ?
Answers
Answer:
When the Soil is in the natural state, it contains moisture and helps in growth of plants. ... The water vapour in test tube raises up and reaches the colder temperature of the test tube and the vapours condense due to touch of colder surface and the test tube is closed proving the 'existence of water' in soil.
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.