Energy and Efficiency

Types of Energy

Thermal (heat) energy

- An object at a higher temperature has greater thermal energy.

e.g. the Sun, hot water

Light energy

- Light is a wave tat is emitted from anything at a very high temperature.

e.g. stars, fire

Electrical energy

- Usually associated with electric current.

e.g. mains supply, overhead cables

Sound energy

- An object vibrating will emit sound

e.g. Buzzer, bell

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