State the energy changes which takes place when:1. Water freezes in th

1.	State the energy changes which takes place when:1. Water freezes in the freezing chamber of a fridge. 2. Photographic film is exposed to sunlight. 3. Food is digested by animals. 4. During electrolysis. 5. Burning of coal. 6. Petrol engine of a running motor car. 7. A battery lighting up a bulb. 8. Electricity obtained from nuclear energy. 9. Electricity obtained from solar energy. 10. Electricity obtained from wind energy. 11. Electricity obtained from hydro energy.
Answer» 1. The kinetic energy of water molecules is released in the form of heat energy. 2. The light energy changes to chemical energy? 3. The chemical energy changes into heat energy. 4. The electrical energy changes to chemical energy. 5. The chemical energy changes into heat energy. 6. The chemical energy changes into mechanical energy. 7. The electrical energy changes into heat energy and light energy. 8. The heat energy changes into electricity. 9. The heat energy changes into electricity. 10. The K. E. changes into electricity. 11. The Kinetic energy changes into electricity.

State the energy changes which takes place when:1. Water freezes in the freezing chamber of a fridge. 2. Photographic film is exposed to sunlight. 3. Food is digested by animals. 4. During electrolysis. 5. Burning of coal. 6. Petrol engine of a running motor car. 7. A battery lighting up a bulb. 8. Electricity obtained from nuclear energy. 9. Electricity obtained from solar energy. 10. Electricity obtained from wind energy. 11. Electricity obtained from hydro energy.

Answer»

1. The kinetic energy of water molecules is released in the form of heat energy.

2. The light energy changes to chemical energy?

3. The chemical energy changes into heat energy.

4. The electrical energy changes to chemical energy.

5. The chemical energy changes into heat energy.

6. The chemical energy changes into mechanical energy.

7. The electrical energy changes into heat energy and light energy.

8. The heat energy changes into electricity.

9. The heat energy changes into electricity.

10. The K. E. changes into electricity.

11. The Kinetic energy changes into electricity.