Page 118 - SST Class 08

Quiz Time 2. _______________________________________

Write five steps to save water at homes. One has 3. _______________________________________
been done for you : 4. _______________________________________
1. Do not take a shower to bathe instead use a 5. _______________________________________
bucket of water.

v Land is the most important natural resource as it sustains different forms of life and fulfils our basic needs.
v Climate, relief, soils, population size and available capital determine the land use of a place.
v Soil refers to the uppermost layer of the earth. It has four main layers called horizons.
v Soil formation is affected by many factors such as parent rock, climate, vegetation and time.

v Different crops are grown in different types of soils. The different kinds of soils are alluvial soils, black soils,
red soils, laterite soils, mountain soils and desert soils.

v Soil conservation is important to maintain life on the earth. Steps need to be taken to stop its degradation.
v Water is needed for the survival of human beings and for all their activities.
v 97% of the total water is found in oceans and seas, 2% in ice-caps and glaciers and 1% in groundwater and
rivers.
v The distribution of freshwater resources is highly uneven on the surface of the earth. It is varied not only
from season to season but also from region to region.
v The countries which are facing the water scarcity are mostly developing or underdeveloped countries.
v Afforestation, recycling, rainwater harvesting and drip irrigation are some measures of water conservation.

A. Tick (3) the right option :
1. The total geographical area of India is _____________ .
(a) 327 million hectares (b) 330 million hectares (c) 329 million hectares

2. Allowing the used land to rest so that natural forces can act on the soil is called _____________ .
(a) fallowing (b) soil erosion (c) contour ploughing
3. In _____________ , two or more than two crops are grown on the same piece of land, one after the
another.
(a) crop rotation (b) strip cropping (c) intercropping

4. _____________ has low nutrient and low organic levels.
(a) red soil (b) sandy desert soil (c) alluvial soil
5. The factor which contributes in soil formation is _____________ .

(a) denudation (b) irrigation (c) parent rock
6. _____________ is the soil conservation method.
(a) contour ploughing (b) overuse of fertilizers (c) deforestation

Contemporary Social Science-8
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