Available Answers

1. 1.

   Fill in the blanks.

   1. Firewood, charcoal, dried cow dung and animal wastes are _______________ sources of energy. (commercial/non-commercial)
   2. Coal and petroleum are fossil fuels which are ______________. (exhaustible/non-exhaustible)
   3. _____________ resources are considered to be non-renewable as they are present in limited quantity. (Wood/Minerals)
   4. Firewood and hydel power are _____________ sources of energy. (conventional/non-conventional)
   5. ____________ energy is the most inexhaustible energy source. (solar/nuclear)
2. 2.

   Match the following:

   Column A	Column B
   a. Bio fuel is a __________ source of energy	i. The ability to work
   b. Petroleum	ii. Renewable
   c. Wind Energy is a ___________ resource	iii. Non-conventional
   d. Energy	iv. Coal
   e. Buried Sunshine	v. Black Gold

    

3. 3.

   Write 'T' for True and 'F' for False.

   1. Hydel power is also known as hydroelectricity.
   2. Solar energy and wind energy are examples of renewable resources.
   3. Conventional sources of energy such as coal do not cause pollution.
   4. Coal is also referred to as Black Gold.
   5. All renewable resources are inexhaustible.
   6. Rain water and river water is stored in dams to generate hyrdoelecticity.
4. 4.

   Name two traditional sources of energy.

5. 5.

   Why are minerals considered to be a non-renewable source of energy?

6. 6.

   What are fossil fuels?