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Inner Planets (Grade 9)

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Inner Planets

1. 
Which of the following is considered the 'Red Planet?'
  1. Mars
  2. Earth
  3. Venus
  4. Mercury
 
2. 
Which planet is known as "Earth's Twin"?
  1. Saturn
  2. Mars
  3. Uranus
  4. Venus
3. 
Which planet is 1.00 au from the sun?
  1. Mercury
  2. Earth
  3. Neptune
  4. Pluto
 
4. 
How many moons does Mars have?
  1. 5
  2. 10
  3. 20
  4. 2
5. 
What is the gas that makes up most of the Martian atmosphere?
  1. nitrogen
  2. oxygen
  3. carbon dioxide
  4. water vapor
 
6. 
Select the letter of Mercury's position in the solar system.
  1. innermost terrestrial planet
  2. innermost Jovian planet
  3. outermost terrestrial planet
  4. outermost Jovian planet
7. 
Mercury is thought to be composed of approximately 30%                                  and approximately 70% of                                 .
  1. rocky material/water
  2. water/metallic material
  3. rocky material/metallic material
  4. water/gases
 
8. 
Why is it unlikely that life as we know it exists on Venus?



9. 
List some facts about Mars.



 
10. 
Why is it important that the Earth is located the perfect distance from the sun?





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