Solar System Review

Front

What is Earth's orbit?

Back

A nearly circular path around the sun that takes about 365 days.

Front

When is gravity greatest between two objects?

Back

When the objects are larger and closer together.

Front

What makes Earth unique among planets?

Back

Earth is the only planet known to have usable water, an atmosphere, and be made up of rock.

Front

What are stars primarily made of?

Back

Stars are huge balls of hot gases.

Front

In which galaxy is Earth located?

Back

Earth is located in the Milky Way galaxy.

Front

What is the main source of light and heat for the solar system?

Back

The Sun.

Front

What are the inner planets of the solar system?

Back

Mercury, Venus, Earth, and Mars.

Front

What are the outer planets of the solar system?

Back

Jupiter, Saturn, Uranus, and Neptune.

Front

What is the asteroid belt?

Back

A region of space between Mars and Jupiter where many asteroids are found.

Front

What is a comet?

Back

A small celestial body made of ice, dust, and rocky material that develops a tail when it approaches the sun.