What is the closest planet to the Sun?

• Mercury
• Mars
• Venus
• Earth 

What are the inner planets composed of?

• gases and ice
• rock and ice
• gases and rock
• rock

What do all the items in this list have in common?
1) has a day longer than its year
2 )is the hottest planet
3 )rotates counter clockwise (east to west)

• This list describes Earth.
• This list describes Mercury.
• This list describes Mars.
• This list describes Venus.

Which list places the inner planets in order from largest in size to smallest in size?

• Venus, Earth, Mercury, Mars
• Mercury, Mars, Venus, Earth
• Earth, Venus, Mars, Mercury
• Venus, Mars, Earth, Mercury

Which inner planets have at least one moon?

• Earth and Mars
• Mercury and Mars
• Earth and Jupiter
• Mars and Venus

What do Mercury and Venus have in common?

• They both thick atmospheres.
• They both rotate counter clockwise.
• They have a similar diameter.
• They both have no moons.

The right combination of temperature, water, and oxygen

• affects Mars’s orbit.
• supports life on Earth.
• causes gas giants to form.
• results in storms on Venus.

The absence of a dense atmosphere and Mercury’s slow rotation contribute to 

• long days & short nights   
• short days & long nights   
• steady temperatures   
• a large daily temperature range   

____________is a planet similar to Earth in size, mass, and density.

• Mercury
• Venus
• Mars
• Neptune

The sun and all the planets and other bodies that revolve around it make up our

• universe
• galaxy
• solar system
• neighborhood