Unit C: The Planets

Which of the following planets has almost no atmosphere?

• Mercury

• Venus

• Earth

• Mars

Which of the following planets has a lot of liquid water on its surface?

• Mercury

• Venus

• Earth

• Mars

Which of the following planets is the largest?

• Mercury

• Venus

• Earth

• Mars

Which of the following planets has the smallest orbit?

• Mercury

• Venus

• Earth

• Mars

What do the outer planets (Jupiter, Saturn, Neptune, and Uranus) all have in common?

• They all have rocky surfaces.

• They all have thick atmospheres.

• They all have hot surfaces.

• They are all the same size.

What is a noteworthy feature of the planet Jupiter?

• It has a huge ring system

• It has polar ice caps

• It has a great red spot

• Its surface has lots of craters

Approximately how long does it take Saturn to complete one orbit around the Sun?

• 2 months

• One year

• 29 years

• 249 years

What is a noteworthy feature of the planet Mars?

• It has a huge ring system

• It has polar ice caps

• It has a Great Red Spot

• Its surface is covered with canals

Phobos and Deimos are two tiny moons that belong to which planet?

• Mars

• Jupiter

• Saturn

• Neptune

One of Saturn’s moons is called:

• Ganymede

• Titan

• Triton

• Phoebe