Earth and Space Concepts

Front

Rotation

Back

Earth turning on its axis. This causes day and night.

Front

Orbit

Back

The path an object follows as it moves around another object. The moon does this around the Earth. Earth does this around the sun.

Front

Revolution

Back

The movement of one object in an orbit around another object. Earth does this around the sun each year. This causes a change in seasons.

Front

Axis

Back

An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates.

Front

Sun

Back

The star at the center of our solar system.

Front

Earth

Back

3rd planet from the sun.

Front

Shadow

Back

An area from which light is blocked.

Front

Phases of the Moon

Back

Caused by how much of the sunlit side of the Moon faces Earth.

Front

Gravity

Back

A force that pulls objects toward each other.

Front

Earth's Gravity

Back

An invisible force that pulls objects downward toward the center of Earth.