Question

give 5 examples of energy degradation (heat and energy lesson 9th std)

Answer 1

Explanation:

1. when we run a vehicle we spend a part of energy in fuel but major part of the energy is getting wasted in the form of heat.
2. in an electric bulb the electric energy is getting converted into light energy but some of the energy is getting converted into to heat energy.
3. in hair dryer the electric energy is getting converted into a wind energy but some of the energy is getting converted into unusable form of heat energy.
4. when we cook food over a fire the the major part of the heat energy is radiated out in the atmosphere.This radiated energy is of no use.