Earth in Space Vocab 1

Front

Study of the moon, stars, and space objects.

Back

Astronomy

Front

Every object in the universe attracts every other object.

Back

Law of Universal Gravitation

Front

Imaginary line through Earth's center and poles, about which Earth rotates.

Back

Axis

Front

Attractive force between objects; strength depends on masses and distance.

Back

Gravity

Front

Spinning motion of a planet on its axis.

Back

Rotation

Front

Push or pull exerted on an object.

Back

Force

Front

Two days of the year with equal day and night, when neither hemisphere is tilted toward or away from the sun.

Back

Equinox

Front

Movement of an object around another.

Back

Revolution

Front

Days when the sun is farthest north or south of the equator.

Back

Solstice

Front

Path of an object revolving around another in space.

Back

Orbit