Solar System Vocabulary Worksheet

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Across
  1. 3. The first planet from the sun. It is the smallest terrestrial planet.
  2. 8. A system where Earth is the center of the revolving planets and stars.
  3. 9. The seventh planet from the sun.
  4. 10. Used a telescope to make discoveries which supported the heliocentric model.
  5. 11. Small bodies that are made up of metals and rocky material. These are bigger than a meteoroid.
  6. 12. The only star in our solar system and our source of energy.
  7. 13. The second planet from the sun. It is often called Earth's sister planet.
  8. 15. A meteoroid that enters Earth's atmosphere.
  9. 17. The eighth planet from the sun.
  10. 18. The sixth planet from the sun.
  11. 19. A Greek astronomer that developed the geocentric model.
  12. 20. The third planet from the sun. The only planet in our solar system that has a suitable atmosphere for sustaining life.
Down
  1. 1. The fourth planet from the sun. Often called the red planet.
  2. 2. A system where Earth and the other planets revolve around the sun.
  3. 4. A meteor that reaches Earth's surface.
  4. 5. The fifth planet from the sun and the largest planet in our solar system.
  5. 6. A small rocky or metal body traveling in outer space.
  6. 7. Copernicus Developed the heliocentric system.
  7. 14. Proved the orbit of each planet is elliptical.
  8. 16. Loose collections of ice, dust, and small rocky particles whose orbits are usually a very long, narrow ellipse orbiting the sun.