Unit 1 & 2 Final Exam Review

Front

What are meteors?

Back

Meteors are smaller pieces of rock that burn up in Earth's atmosphere, often seen as 'shooting stars'.

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What is a galaxy?

Back

A galaxy is a large group of stars, gas, and dust held together by gravity.

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What is a globular cluster?

Back

A globular cluster is a group of tens to hundreds of thousands of stars held tightly together by gravity.

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What is a light year?

Back

A light year is the distance that light travels in one year.

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What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that is oval in shape.

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What are asteroids?

Back

Asteroids are small rocky bodies that orbit the sun, primarily found in the asteroid belt between Mars and Jupiter.

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What are comets?

Back

Comets are icy bodies that release gas or dust, forming a glowing coma and tail when they approach the sun.

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What is a solar system?

Back

A solar system is a collection of planets and other celestial bodies that orbit a star.

Front

What is the difference between meteoroids and meteors?

Back

Meteoroids are small rocky or metallic bodies in space, while meteors are the streaks of light produced when meteoroids burn up in the atmosphere.

Front

What is a universe?

Back

The universe is the vast expanse that contains all of space, time, matter, and energy.