Class I

How long does it take for light from the Sun to reach Earth
  1. 1 minute
  2. 8 minutes
  3. Instantaneous
  4. 24 hours
What is the closest planet to the Sun?
  1. Mercury
  2. Saturn
  3. Venus
  4. Jupiter
In 2007, Voyager 2 crossed the heliosheath boundary and into the vast region at the edge of our solar system where the solar wind runs up against the thin gas between the stars. What did this crossing confirm about the shape of our solar system?
  1. It’s squashed
  2. It’s round
  3. It’s like a donut
  4. It’s a horseshoe shape.
Which statement describes the atmosphere of the planet correctly?
  1. Venus is mostly carbon dioxide
  2. Mercury is mostly nitrogen
  3. Earth is mostly oxygen
  4. Saturn is mostly helium
What is the hottest planet in our solar system?
  1. Jupiter
  2. Saturn
  3. Mercury
  4. Venus
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