Available Answers

1. 1.

   Fill in the blanks.

   1. Coal, petroleum and natural gas are also known as ______________ fuels.
   2. Coal is used to generate ____________________ power.
   3. _________________, ________________ and _________________ are three different types of coal.
   4. Petroleum is found as _____________________ in rocks.
   5. Nuclear power is produced from nuclear fuels like ___________________ and __________________.
   6. Solar and wind power are examples of _____________________ energy.
2. 2.

   Though India is among the top producers of electricity, there are still millions of Indians who do not have access to electricity. Give reasons.

3. 3.

   Renewable sources of energy are more environment friendly than non-renewable sources. Give reasons.

4. 4.

   We should use flouroscent (CFL) bulbs instead of incandescent bulbs. Give reasons.

5. 5.

   Name any five sources of energy.

6. 6.

   What are fossil fuels?