Unit 1 Ch 1 Study Guide

Front

Sun

Back

A star that has planets orbiting around it.

Front

Why can't we see stars during the daytime?

Back

The brightness of the sun outshines them.

Front

What is a group of galaxies called?

Back

Universe.

Front

Solar System

Back

A sun and everything that orbits it.

Front

Why don't we see a lot of stars during the daytime?

Back

Brightness of the sun.

Front

What is a planet?

Back

A celestial body that orbits a star and is large enough to be rounded by its own gravity.

Front

What is a comet?

Back

A small icy body in space that, when passing close to the sun, heats up and begins to release gases, forming a tail.

Front

What is an asteroid?

Back

A small rocky body that orbits the sun, primarily found in the asteroid belt between Mars and Jupiter.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

What is a star?

Back

A massive, luminous sphere of plasma held together by gravity, undergoing nuclear fusion.