Earth Science Lab

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Across
  1. 3. The size and ________ are directly related
  2. 6. What sunspots and solar flares cause on Earth
  3. 8. The gaseous planets
  4. 10. The earth's _________ is one of the reasons for the seasons
  5. 11. The force that keeps the planets in their orbits
  6. 13. The two center points of an ellipse
  7. 14. The smallest stars on the H-R diagram
  8. 16. The shape of planets' orbits
  9. 17. The element that fuses into helium
  10. 19. Luminosity of the sun
  11. 20. The rocky planets
  12. 21. The celestial object with the longest period of revolution
Down
  1. 1. The celestial object with the lowest eccentricity of orbit
  2. 2. The unit of measurement of mass
  3. 4. The process that forms a star
  4. 5. The biggest stars on the H-R diagram
  5. 7. The jovian planets have a low _____
  6. 9. What the biggest stars will end up as after the star dies
  7. 12. The 5th planet from the sun
  8. 15. The color of the hottest stars
  9. 18. The color of the Sun