Ch. 1 Vocab

Front

Satellite: an object that orbits a planet.

Back

Correct Answer: an object that orbits a planet.

Front

What is a planet?

Back

An object that orbits a star, is large enough to be rounded by its gravity, and has cleared its orbit.

Front

What is a meteor?

Back

A streak of light in the sky from a burning meteoroid in Earth's atmosphere.

Front

What is a comet?

Back

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

Front

What is a star?

Back

A ball of hot gas, primarily hydrogen and helium, undergoing nuclear fusion.

Front

What is a constellation?

Back

A pattern or grouping of stars that people imagine to represent a figure or object.

Front

What is an axis?

Back

An imaginary line through a planet's center and poles, about which it rotates.

Front

Rotation:

Back

the spinning motion of a planet on its axis

Front

Revolution:

Back

Movement of an object around another.

Front

What is an orbit?

Back

the path of an object as it revolves around another object in space