Available Answers

1. 1.

   Tick (√) the correct option.

   1. The ability to do work is called:
      1. force
      2. pull
      3. energy
      4. none of these
   2. Kicking a ball is an example of ____________ energy.
      1. heat
      2. mechanical
      3. electrical
      4. wind
   3. _______________ energy is the energy obtained from moving water.
      1. Wind
      2. Heat
      3. Hydro
      4. Solar
   4. Energy from petrol is an example of _____________ energy.
      1. renewable
      2. non-renewable
      3. solar
      4. none of these
2. 2.

   Name the following:

   1. The energy that needs to be conserved:
   2. The energy obtained from moving air or wind:
   3. The major source of heat on the Earth:
   4. The energy possessed by bodies due to their motion:
   5. The energy present in electric wires:
3. 3.

   Complete the concept map.

   

4. 4.

   Define work.
5. 5.

   Define energy.
6. 6.

   How is the energy obtained from water different from that obtained from wind?