Spaceship Earth Lessons 1 and 2

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Across
  1. 2. The name of the very first type of clock.
  2. 4. The imaginary line that runs through the Earth that it rotates on.
  3. 5. The number of hours in a day, thanks to the Ancient Egyptians.
  4. 9. Earth's rotation on its axis gives us this.
  5. 10. One of the men who presented the idea that the Earth moved, not the sun. He is also known for designing and building telescopes.
Down
  1. 1. The rate of speed the Earth rotates at (in miles per hour).
  2. 3. The sun rises in this direction.
  3. 6. Earth's spin around its axis.
  4. 7. The sun sets in this direction.
  5. 8. When the sun is blocked by an object, it creates this.