Solar System

What is the center of the Solar System?

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Which planet is the closest to the Sun?

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How many planets are there in the Solar System after Pluto was reclassified as a dwarf planet?

• 7

• 8

• 9

• 10

Why are planets closer to the Sun hotter than those farther away?

• They have more volcanoes

• They receive more heat from the Sun
  
  

• They are made of hot gases

• They move faster around the Sun

What happens when asteroids collide in space?

• They form new planets

• They create meteoroids

• They explode like a star

• They disappear into black holes

What is the main source of heat for the Solar System?

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Which planet has the lowest temperature in the Solar System?

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Why do planets farther from the Sun have lower temperatures?

• They have more clouds blocking sunlight

• They receive less heat from the Sun

• They move faster in their orbits
  
  

• They are made of ice
  
  

Which of the following statements best describes the relationship between a planet’s distance from the Sun and its temperature?

• The farther a planet is from the Sun, the hotter it becomes

• The closer a planet is to the Sun, the colder it becomes
  
  

• The closer a planet is to the Sun, the hotter it becomes
  
  

• The distance from the Sun does not affect temperature

If Earth were located at Uranus’ position, what would happen?

• It would be too cold to support life

• It would have more gravity

• It would be hotter than it is now

• It would rotate faster