Topic 7 Space FC

Front

The system consisting of the sun and the planets and other objects that revolve around it.

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Solar system

Front

A unit of distance equal to the average distance between Earth and the sun, about 150 million kilometers.

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Astronomical Unit (AU)

Front

A large, gaseous body at the center of the solar system.

Back

Sun

Front

An object that orbits a star, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit.

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Planet

Front

A natural satellite that orbits a planet.

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moon

Front

One of the rocky objects revolving around the sun that is too small and numerous to be considered a planet.

Back

Asteroid

Front

A chunk of rock or dust in space, generally smaller than an asteroid.

Back

meteoroid

Front

A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit.

Back

comet

Front

The energy transferred through space by electromagnetic waves.

Back

Electro-Magnetic Radiation

Front

Electromagnetic radiation that can be seen with the unaided eye.

Back

Visible light