Astronomy Review Vocab

Front

The further two objects are ...

Back

the lesser the gravitational attraction.

Front

Weight

Back

The amount of gravity that pulls on an object's mass.

Front

Mass

Back

the amount of matter in an object.

Front

The more massive an object is ...

Back

the greater the gravitational attraction.

Front

Direct sunlight is...

Back

when sunlight energy is focused and intense and it hits Earth's surface straight on.

Front

Indirect sunlight is...

Back

when sunlight energy is spread out and has less energy, and hits Earth's surface at an angle.

Front

What keeps our planets in orbit?

Back

Gravity and inertia

Front

Rotation

Back

The spinning motion of a planet on its axis.

Front

What determines a Year?

Back

The time it takes an object to revolve once around another object.

Front

Inertia

Back

The tendency of an object to resist a change in motion.