Soil

The uppermost layer of Earth is called soil.

• True

• False

The uppermost layer of soil is called sub-soil.

• True

• False

Humus makes the soil fertile.

• True

• False

The type of soil which absorbs more water will have lower rate of percolation.

• True

• False

Soil is formed through breakdown of rocks by the process of

(a)  

Layered structure of soil is called

(a)  

Type of soil which has particles of sand, silt and clay in equal amounts is

(a)  

Process of carrying away of top soil by wind/water is called

(a)  

Tick the word that is not related to other words given below. (Select the odd one out)

• A-horizon

• B-horizon

• C-horizon

• D-horizon

Tick the word that is not related to other words given below. (Select the odd one out)

• Percolation rate

• Clay

• Absorption of water

• Moisture