STD-10 SOCIAL-SCIENCE CH-8 QUIZ (ENG-MED)

 STD-10 SOCIAL-SCIENCE (ENG-MED)

CH-8 Natural Resources

Short Question

Q 1.What is soil erosion? State the measures to prevent it.

ANS: Soil Erosion: When land particles get transferred from one place to another due to fast-moving air i.e. wind and water, it is called soil erosion.

It takes many years to form the upper layer of soil. When this top layer of soil erodes due to heavy rain or by stormy wind, the agricultural production on that soil decreases. Hence, it is extremely important to check that the soil does not erode. Measures to prevent soil erosion:

1. Control grazing activity on the land.
2. Plantation should be carried out in contour method in sloppy regions.
3. Trees should be planted in fallow land.
4. Construct check dams on streams.
5. To reduce the speed of the water cultivation should be done very deeply in the fields.

Q 2.What is called as Mountain Soil?

ANS: Mountain Soil: The layer of the mountain soil is very thin and is underdeveloped. Mountain soil is found in the valley and sloppy regions of Himalayas at an altitude of about 2700 to 3000 metres. This soil is found in Assam, Darjeeling, Uttarakhand, Himachal Pradesh and Kashmir. This soil is found in the regions of pipe and child trees in Himlayas.

Q 3.Write short note on the Desert Soil.

ANS: Desert soil is sandy and infertile. It contains more of dissolved minerals and lacks organic matter. Desert soil is found in areas having arid or semi-arid climate. This soil is found in Rajasthan, Haryana and Southern Punjab. In Gujarat, this type of soil is found in Kachchh and some parts of Saurashtra. If proper irrigation facilities are used, then crops like millet and jowar can be cultivated in this soil.