Page 138 - SST Class 08

3. ____________ mines are used for mining minerals located deep inside the earth.
(a) quarries (b) shaft (c) cast

4. ____________ energy emits radiation.
(a) tidal (b) geothermal (c) atomic
5. Solar energy is a ____________ source of energy.
(a) renewable (b) non-renewable (c) none of these

6. Wind energy is used to ____________ .
(a) pump water (b) drive windmills (c) both of these
7. The sea beaches experience the phenomenon of ____________ .

(a) tides (b) earthquake (c) none of these
8. Coal, oil and natural gas are of ______________ origin.
(a) inorganic (b) chemical (c) organic

B. Match the following :
1. Copper u u South Africa

2. Bauxite u u Russia
3. Gold u u Canada
4. Manganese u u Kuwait
5. Coal u u Morocco

6. Mineral Oil u u Guinea

C. Compare the following :
1. Metallic and non-metallic minerals
2. Renewable and non-renewable sources of energy
3. Anthracite and bituminous coal

4. Solar energy and geothermal energy
5. Tidal and wind energy

D. Answer in one word or phrase :
1. Where are minerals found?
2. What is a mineral called in its natural state?
3. What metal has bauxite gradually replaced?

4. What are the two classifications of sources of energy?
5. What are uranium and thorium used for?
6. What is the name for the natural heat trapped from the earth’s interior?

E. Answer the questions in brief :
1. How are minerals useful to us? What are the characteristics of minerals?

2. What are the classifications of minerals? Explain any one of them.
3. What do you understand by mining? What are the different types of mining?
4. How are the sources of energy distinct from each other?
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