Grade 3, Science Olympiad (CBSE) - Layers of soil 

Try free sample papers for IMO, IEO and NSO
Browse study material for Olympiads

Grade 3  |   Science  |   Layers of soil, Our Environment, Olympiad, CBSE, ICSE, SOF, ITO

Layers of soil

Following are the 5 layers of soil:

The topmost layer of soil is called humus. Humus is the organic matter which is made up of dead plants and animals. Humus is very fertile and helps plants to grow. Humus is dark brown or black in color.

Topsoil is below humus. It is very fertile and contains microorganism. It is rich in minerals.

The subsoil is below the topsoil. It is the home of earthworms.

Small rocks are weathered rocks below subsoil. Roots of very few trees reach up to this layer.

Bedrock is the bed of newly formed rocks. These rocks are big.


Actual layers of soil

 Recommended watch

 Useful free youtube videos 

Layers of soil
Note : This video is the property of MakeMeGenius. We really appreaciate the hard work and brain put in by the team of MakeMeGenius to bring out this video. We suggest you to visit their channel on youtube for more science videos. They have a huge collection of informative science videos.

Try our demo tests

Get me the extra edge for Olympiads Exams