G5-Sci-Soil, Rocks & Minerals

Which of the following is INCORRECT for soil?

• The outermost layer of the soil

• A combination of rocks, minerals, gases, living organisms etc

• A source of gemstones like diamond

• Its just dust which is good for nothing

On which of the following soil erosion by water depends?

• The rate of the flow of water

• The length of the slope

• The extent of vegetation

• All of the given

Select the correct option for the given hints-

1) Soil particles move in the form of small bounces along the surface

2) It causes severe damage to the surface as well as to the vegetation

• Suspension

• Saltation

• Surface creep

• Over cropping

Deforestation leads to loss of ___ along with damage to the different ___

• biodiversity, habitat

• water, energy

• soil, water

• None of the given

Lack of vegetation makes soil dry and makes it more prone to erosion by

• Wind

• Water

• Both wind and water

• Animals

___ is cultivating of crop lands continuously without leaving them to fallow.

• Over cropping

• Over grazing

• Over erosion

• All of these

Natural soil erosion can be advantageous too.

• True

• False

Which of the following is NOT an advantage of soil erosion?

• Formation of soil

• Binding of carbon

• Destruction of new habitat

• Site cleansing

A) Roots of trees help in anchoring the soil particles

B) Contour ploughing and stubble planting help to conserve soil in hilly areas

• Only A is correct

• Only B is correct

• Both A and B are correct

• Both A and B are incorrect

Crop rotation is the process of planting ___ crops in a specified sequence in the ___ area

• same, different

• different, same

• same, same

• different, different