The ______is between the orbits of Mars and Jupiter. (Hint: It would hold up the solar system's pants!! ;)

• solar system
• asteroid belt
• terrestrial planets
• photosphere

The four terrestrial (Inner) planets are known for their _________

• hot temperatures
• deep atmospheres
• rocky surfaces
• large size

How long does it take Earth to complete one revolution around the Sun?

• 24 hours
• one week
• one month
• one year

Earth completes one full ___________ on its axis every 24 hours.

• rotation
• revolution
• resolution
• reservation 

What is a planet?

• a swirling ball of gases
• a star
• a huge ball made out of rock
• a large object that orbits a star

Which is NOT an inner planet?

• Mercury
• Venus
• Earth
• Jupiter

Which planet is between Venus and Mars?

• Earth
• Neptune
• Mercury
• Jupiter

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

• gas
• metal
• water
• rock

Select the order from smallest to largest.

• Sun, Milky Way, solar system, universe
• Sun, Milky Way, universe, solar system
• Sun, solar system, Milky Way, universe
• Sun, solar system, universe, Milky Way

A spiral galaxy of stars that contains our Sun

• Planisphere
• Intensity
• Star
• Milky Way