Unit 1: Space

Front

Asteroids

Back

Large and small rocks or metallic masses orbiting the Sun; made up of materials similar to those that formed the planets

Front

Atmosphere

Back

The layer of gas surrounding a planet that is held in place by gravity

Front

Characteristic

Back

A feature that helps identify something

Front

Comet

Back

A celestial body of ice, dust, and rock with an elongated and elliptical orbit

Front

Composition

Back

The general makeup of something

Front

Gas Giants

Back

Outer planets made mostly of gases

Front

Meteorite

Back

Remains of a meteoroid that strike the surface of a planet or moon

Front

Meteoroid

Back

A natural chunk of rock or dust existing outside Earth's atmosphere

Front

Planet

Back

A large celestial body that revolves around a star in a solar system

Front

Relative

Back

In comparison to something else