Sun, Earth, Moon Vocab

Front

Time for Earth to complete one rotation (24 hours)

Back

Rotation

Front

Instrument measuring time using the sun's position.

Back

Sundial

Front

Instrument showing direction using a magnet for North (N,E,S,W).

Back

Compass

Front

A line, real or imaginary, around which something spins.

Back

Axis

Front

Earth faces the Sun and is lighted

Back

Day

Front

Earth is dark and facing away from the Sun.

Back

Night

Front

Path of one object revolving around another in space

Back

Orbit

Front

Star at the center of our Solar System, providing heat and light, and keeping the system in orbit.

Back

Sun

Front

A force that pulls objects toward Earth's center.

Back

Gravity

Front

Bowl-shaped indents on a planet's surface from collisions.

Back

Crater