The path one object takes as it revolves around another object in space.

• rotate
• revolve
• orbit
• axis

An imaginary line that a sphere rotates around.

• revolution
• rotation
• orbit
• axis

Making a complete spin on an axis.

• rotation
• revolution
• axis
• orbit

Making a complete turn or orbit around an axis or center.

• Revolution
• rotation
• orbit
• axis

A natural satellite that orbits a planet, some planets have none and others have over 60.

• sun
• moon
• atmosphere
• Earth

The outermost covering or layer.

• moon
• sun
• atmoshpere
• surface

The layer of gas surrounding planet Earth; held in place by gravity and composed of a limited number of elements-primarily nitrogen and oxygen.

• atmosphere
• crater
• water
• space

The center of our solar system that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit.

• Earth

• sun

• moon

• Jupiter

The planet that all known life exists on.

• Mars
• Earth
• Venus
• Saturn

What is the Earth made of?

• rock
• water
• oxygen
• water