Science Mass and Gravity

Gravity

A force of attraction between two objects

Weight

A measure of the force of gravity on an object

AU

A unit of measure equal to the average distance between Earth and the sun

How does changing the radius affect the strength of a planets gravity?

As the radius increases the gravity decreases

Escape Velocity

Is the smallest velocity needed for an object to escape from a planets gravitational pull

How does increasing the mass affect the gravity of a planet?

It makes the gravity stronger

The metric unit of force is the

Newton or N

Does the mass of an object change when it's moved to another planet?

No

Trajectory

Path an object takes

Velocity

Speed and direction that an object travels over a specified distance during a measured amount of time

Light Year

The distance light travels in one year

Radius

The distance of a planet from the center to the surface

Spring Scale

Used to measure force

Does the weight of an object change when it's moved to another planet?

Yes

Mass

The total amount of matter in an object