Solar system vocabulary

Front

Geocentric

Back

Earth-centered

Front

Heliocentric

Back

Sun-centered

Front

Orbit

Back

The path an object follows as it moves around another object

Front

Revolution

Back

The motion of one object around another object

Front

Rotation

Back

A spinning motion

Front

Axis

Back

A line on which an object rotates

Front

Day

Back

The time taken for a plane to spin once on its axis

Front

Year

Back

The time taken for a planet to orbit the sun once

Front

Elliptical Orbit

Back

An orbit shaped like an oval

Front

Terrestrial

Back

Earth-like