Unit 6 Vocab Test

Front

Asteroid:

Back

Rocks or metallic masses orbiting the Sun, made of materials similar to those forming planets.

Front

Moon

Back

A celestial body that revolves around a planet.

Front

Dwarf Planet

Back

A celestial body orbiting a star, massive enough to be rounded by its own gravity but not large enough to clear its orbital region of smaller objects.

Front

Comet

Back

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

Front

Atmosphere

Back

Layer of gas surrounding a planet or star.

Front

Gravity

Back

the force that causes objects with mass to attract one another

Front

Force

Back

An interaction that changes the state of motion of an object.

Front

Geocentric

Back

Earth-centered

Front

Heliocentric

Back

Sun-centered

Front

Mass

Back

A measure of how much matter is present in a substance.