Front

Air surrounding Earth, a mix of gases.

Back

atmosphere

Front

Path an object follows around another in space

Back

orbit

Front

Spinning of a planet or Moon on its axis.

Back

rotation

Front

An object that generates its own heat and light.

Back

star

Front

Rise and fall of the ocean due to gravitational pull...

Back

Tides

Front

Changes in natural sunlight due to Earth's tilt...

Back

Seasons

Front

Moon?

Back

earth's natural satellite

Front

Substances that make up a whole object...

Back

Composition

Front

One orbit of an object in space around another...

Back

Revolution

Front

Imaginary line around which an object rotates...

Back

Axis