SOIL PROFILE AND SOIL FORMATION

Soil is a loose mixture of:

• Organic materials.

• Organic and inorganic materials.

• Dead and decaying micro organisms.

Tags

NGSS.MS-LS2-3

The soil horizons are different from the other based on their

• Chemical and physical features.

• Physical features mainly colour and texture.

• Chemical features only.

The layer which is poor in organic matter is known as:

• Regolith

• Subsoil

• Bedrock

The rate of weathering and formation of soil is determined by :

• Number of micro organisms present in the soil.

• Temperature and rainfall.

• The types of rocks.

Tags

NGSS.MS-ESS2-2

Soil in the Maldives is formed from:

• Coralline algae

• Different types of corals.

• Skeleton of sea animals, sea plants and coralline algae.

Tags

NGSS.MS-LS2-3

What happen in the third process of soil formation?

• Sediments and tiny rock particles deposits.

• Weathered rocks are worn away.

• Sediments accumulates.

Soil formation begins with weathering of:

• Bedrocks

• Rocks

• Humus

Tags

NGSS.MS-ESS2-2

What is the movement of soil from one place to another?

• Deposition

• Erosion

• Discharge

Which of the following shows where soil formation happens at a faster rate?

• Cold dry climate

• Steep slopes

• Valleys and flat areas

Which of the factors involved in soil formation?

• Parent material

• Temperature

• Biota

• Climate

• Topography