Front

What is the only planet in our Solar System that life can survive on?

Back

Earth

Front

Which is the largest object in our solar system?

Back

Sun

Front

Which planet is closest to the sun?

Back

Mercury

Front

Which planet is third from the sun?

Back

Earth

Front

What is one of the main differences between the outer and inner planets?

Back

The outer planets are gas planets.

Front

What are the four inner planets?

Back

Mercury, Venus, Earth, Mars.

Front

What are the four outer planets?

Back

Jupiter, Saturn, Uranus, Neptune.

Front

What is the main component of the Sun?

Back

Hydrogen.

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 the asteroid belt?

Back

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