Solar System

Front

The four inner planets are...

Back

Rocky and small

Front

The outer planets are...

Back

Very large and made of gases

Front

Which two planets are out of order in this list of our solar system?
Mercury-Earth-Venus-Mars-Jupiter-Saturn-Uranus-Neptune-Pluto.

Back

Earth and Venus

Front

How does a telescope help us understand the moon?

Back

It helps us see surface features

Front

What did a probe discover from a soil test on Mars?

Back

There are no living organisms in Martian soil.

Front

Why is space travel difficult for people?

Back

The distances are very great; it is dangerous and expensive.

Front

What holds the planets in their orbits around the sun?

Back

gravity

Front

Which object has the most gravity? Options: Earth, moon, Jupiter, sun

Back

sun

Front

Without gravity, what would be the shape of the solar system?

Back

Much different than it is now.

Front

Does this graph show relative size or distance from the sun of the planets?

Back

It shows relative size.