Gravity is a pulling force It pulls things down towards the earth.

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Presentation transcript:

Gravity is a pulling force It pulls things down towards the earth

Things fall because of gravity

Things always fall down

Gravity Holds everything and every one on the earth

How does gravity work? There are two ideas you need to know. The more massive an object is, the more gravity it has. The closer two objects are, the stronger the gravitational pull between them. Open the hyperlink!

Gravity was discovered by a scientist named Isaac Newton ? ? ? Gravity

Stories say he discovered Gravity when an apple fell on his head OUCH !

Weight is a measure of the force of gravity on an object.

PlanetWeight Mercury102 N (23 lb) Venus245 N (54 lb) Earth270 N (60 lb) Mars102 N (23 lb) Jupiter638 N (142 lb) Saturn247 N (55 lb) Uranus240 N (53 lb) Neptune304 N (68 lb) Pluto 18 N (4 lb)

If you are 60 lb on the Earth

The force of gravity on the moon is one-sixth of Earth’s gravity. Let’s movie ! Open Hyperlink

In Space, Gravity keeps the planets moving around the sun

Gravity ? everything and every one on the earth ?