# Gravity Pg 20-25

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```					Gravity Pg 20-25
Main Topic             Supporting Detail

What is gravity        A force of attraction between objects due to their mass

All objects experience an attraction toward all other
objects.

Earth’s mass is so large it makes gravitational pull of
all other objects on Earth unnoticeable.

Earth’s gravitational force pulls everything towards the
center of Earth.

Newton                 Described relationship between gravitational force,
mass, and distance

Applies to all objects in the universe.

Law of Universal       All objects in the universe attract each other through
Gravitation            gravitational force.

Gravitational force increases as mass increases
(ex. Elephant is harder to pick up than a cat because it
has a greater mass)

Gravitational force decreases as distance increases

Weight                 a measure of the gravitational force on an object –
(measured using a scale (n))

Mass                   amount of matter in an object (measured using a
balance (g))

Units of weight/mass   Newton- SI unit for force (weight)

Kilograms, grams – SI unit for mass

Pound- standard unit for force (weight)

```
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