The Solar System- 3.9B POST TEST

Front

One full orbit of an object around another object is called a ________.

Back

revolution

Front

Which planet is closest to the sun?

Back

Mercury

Front

One of the main differences between the outer and inner planets is __________.

Back

the outer planets are gas planets

Front

Earth and the other planets closest to the Sun are made mostly of _______

Back

rock

Front

The outer planets are...

Back

Very large and made of gases

Front

What is the center of our solar system?

Back

The Sun

Front

How many planets are in our solar system?

Back

Eight

Front

What are the inner planets?

Back

Mercury, Venus, Earth, Mars

Front

What are the outer planets?

Back

Jupiter, Saturn, Uranus, Neptune

Front

What is a satellite?

Back

An object that orbits a planet.