Working Energy
- Working energy is the form of energy in which work is done.
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- Energy of an object that is moving.
- The faster the object moves, the more kinetic eenrgy it possess.
- If two objects move at the same speed, the one with the greater mass has more kinetic enegy.
- A person who runs or cycles possesses kinetic energy.
b) Electrical Energy
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- Electric charges moving through electrical conductors such as wires.
- Can be produced by geenrators and power stations.
- Lightnings and lighted bilbs possess electrical energy.
c) Sound Energy
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- Produced by vibrating objects.
- Can travel through a medium such as a solid, liquid and gas but it cannot travel through a vacuum because there are no particles in a vacuum.
- Musical instruments produce sound energy.
d) Heat Energy
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- Energy found in hot objects.
- Can increases the temperature of an object.
- Flows from a region with a higher temperature to a region with a lower temperature.
- The hotter the object, the higher the heat energy it gives out.
- The sun is the main source of heat energy.
e) Light Energy
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- Energy produced and radiated by a luminous object.
- It enables us to see things round us.
- Sun is the main source of light energy.
- A burning candle and firewood produce light energy.
f) Mechanical Energy
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- The total kinetic energy and potential energy possessed by an object.
- Produced by machines or by objects changing their positions.
- Mechanical energy is produced by a pendulum that oscillates and a rotating fan blade.