e.g energy transformation and simple machines

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Cards (7)

energy transformation - the process of energy changing into different forms .
sun - main source of energy on Earth.
nuclear energy - energy coming from the sun.
machine - is a device created by men.
simple machines - have no or just few moving parts.
lever - is made up of a straight and stiff object.
compound machine - a machine that has two or more simple machines working together.