Terrestrial Planets

Which is the correct order for the Terrestrial planets?

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

How many planets are in our solar system?

• 9
• 7
• 8
• 10

What is the name for the area where planets form?

• Star nebula
• Planet nebula
• Proto-Planetary disk
• None of these

Terrestrial planets are made of mostly what?

• Metal and rock
• Rock and gas
• Gas and dust
• Metal and gas

The characteristics of a planet are which of the following?

• Orbits the sun
• Is not a moon of another object
• Has removed debris from its orbit
• All the above

How long does one day last for Mercury?

• 59 days 
• 12 days
• 8 hours
• 1 day

Why is Venus sometimes called Earths twin?

• Has similar temp
• Has similar seasons
• Is about the same size
• Is the same distance from the sun

Mercury has four seasons.

• True
• False

Planets that are closer to the sun

• take more time to orbit
• take less time to orbit

Why is the sky of the Moon and Mercury black?

• temperature differences
• small sizes
• no atmosphere