Introduction for Primary

If you lift an object, for example your pencil, then let it go, the pencil falls down towards the ground. The force which pulls your pencil towards the ground is gravity. Earth pulls everything towards it using gravity, including pencils, people and even huge objects like the Moon. Earth pulls on the Moon with gravity, which causes the Moon to orbit around Earth, so that we see the Moon each night. Similarly, all the planets in the Solar system (including Earth) orbit around the Sun because the Sun is pulling the planets with gravity. [Read more…]

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