Earth & Space

Front

Rotation

Back

turning or spinning on an axis

Front

Revolution

Back

the action of one object moving completely around another in an orbital path

Front

axis

Back

an imaginary line that runs through both poles of a planet

Front

orbit

Back

the path an object, such as a planet, takes as it revolves around another object

Front

satellite

Back

an object that orbits another object in space

Front

solar system

Back

the eight planets, the moons, and other objects that orbit the Sun

Front

tides

Back

the rising and falling of the ocean's surface

Front

eclipses

Back

the partial or total blocking of light of one object by another

Front

moon phases

Back

the shape of the lit part of the moon as seen from Earth

Front

crater

Back

a large hole in the ground caused by an asteroid