gravity is a pulling force it pulls things down towards the earth

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Page 1: Gravity is a pulling force It pulls things down towards the earth
Page 2: Gravity is a pulling force It pulls things down towards the earth

Gravity is a pulling force

It pulls things down towards the earth

Page 3: Gravity is a pulling force It pulls things down towards the earth

Things fall because of gravity

Page 4: Gravity is a pulling force It pulls things down towards the earth

Things always fall down

Page 5: Gravity is a pulling force It pulls things down towards the earth

Gravity Holds everything and every one on the earth

Page 6: Gravity is a pulling force It pulls things down towards 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!

Page 7: Gravity is a pulling force It pulls things down towards the earth

Gravity was discovered by a scientist named Isaac

Newton

? ? ? ? ? ? Gravity

Page 8: Gravity is a pulling force It pulls things down towards the earth

Stories say he discovered Gravity when an apple fell

on his head

OUCH!

Page 9: Gravity is a pulling force It pulls things down towards the earth

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

Page 10: Gravity is a pulling force It pulls things down towards the earth

Planet WeightMercury 102 N (23 lb)

Venus 245 N (54 lb)

Earth 270 N (60 lb)

Mars 102 N (23 lb)

Jupiter 638 N (142 lb)

Saturn 247 N (55 lb)

Uranus 240 N (53 lb)

Neptune 304 N (68 lb)

Pluto 18 N (4 lb)

Page 11: Gravity is a pulling force It pulls things down towards the earth

If you are 60 lb on the Earth

0

20

40

60

80

100

120

140

160

Wei

gh

t

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune Pluto

Planet

Weight on Planets in our Solar System

Page 12: Gravity is a pulling force It pulls things down towards the earth

The force of gravity on the moon is one-sixth of Earth’s gravity.

Let’s movie!

Open HyperlinkOpen Hyperlink

Page 13: Gravity is a pulling force It pulls things down towards the earth

In Space, Gravity keeps the planets moving around the

sun

Page 14: Gravity is a pulling force It pulls things down towards the earth

Gravity ? everything and every one on the earth

?

Page 15: Gravity is a pulling force It pulls things down towards the earth

My Ideal Planet

Mercury5%

Venus18%

Earth23%

Mars14%

Jupiter5% Saturn

10%Uranes

5%

Neptune10%

Pluto10%

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranes

Neptune

Pluto

Page 16: Gravity is a pulling force It pulls things down towards the earth