Solar System

Which are true statements about Mercury?  Select TWO answers.

• Mercury is always the closest planet to the Sun.

• Mercury is always the closest planet to Earth.

• Mercury moves in an orbit around the Sun.

• Mercury is sometimes close to Mars.

Which are true statements about the planets and their positions?  Select TWO answers.

• All have rocky surfaces.

• All are about the same size.

• All move in orbits around the Sun.

• All are different distances from the Sun.

In order outward from the Sun, which planet comes before Saturn?  Which planet comes after Saturn?  Choose the correct pair of planets.

• Mars and Venus

• Mars and Jupiter

• 
  Neptune and Uranus

• Jupiter and Uranus

What are the four inner planets?

What are the four outer planets?

There are 8 planets in our solar system.

• True
• False

Pluto is a planet.

• True
• False

What statement is NOT true about inner planets.

• They have rocky surfaces.

• They are the closest to the sun.

• There are 4 inner planets.

• They are very cold planets.

Which statement is NOT true about outer planets.

• We are able to travel to them.

• They have a gas atmosphere.

• They are the bigger planets.

• There are 4 outer planets.

What separates the inner planets and the outer planets?

• other solar systems

• gravity

• asteroid belt

• stars