Earth And Life Science Practice Test

Which term describes a cloud of gas and dust found in space?

Nebula Galaxy Star Comet

Correct Answer:

Nebula

Explanation:

Nebulae are vast clouds of gas and dust that drift through interstellar space. They serve as the raw material for star and planet formation, and some glow or reflect light from nearby stars, making them visible. This makes nebula the right term for a cloud of gas and dust in space. The other options describe larger or different objects: a galaxy is a huge system containing billions of stars and much more; a star is a single luminous ball of plasma powered by fusion; a comet is a small icy body that forms a glowing coma and tail when near the Sun.

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