Soil Erosion and Conservation

Soil is made up of :

• Water

• Metals

• Ice

• Organic materials and rocks

Mass movement of rocks down the hills could be a sign of:

• Landslides

• Floods

• Deforestation

• Weathering

How much time is taken to form 1 cm of soil?

• 10+ years

• 5 years

• 100s of year

• Few months

Which part of soil is fit for vegetation?

• Sub soil

• Top soil

• Weathered rock fragments

• Clay soil

Overgrazing is responsible for causing:

• Soil depletion

• Floods

• Earthquake

• Landslides

The process of piling up rocks to prevent water flow is called:

• Rock Dam

• Erosion

• Mulching

• Landslide

The moisture of soil can be retained by the process of:

• Contour Barriers

• Mulching

• Rock Dams

• Planting grass

Terrace farming is a method common in ______ region.

• Forest

• Mountain

• Coastal

• Plains

______ is one of the ways to prevent soil erosion.

• Trees cutting

• Clearing of forest for agriculture

• Contour ploughing

• Building dams

Heavy rains cause ______ in mountainous regions every year.

• Earthquake

• Tsunami

• Landslide

• Accident