Across
- 2. planet spinning on axis
- 4. shape of earth's orbit
- 6. first American to revolve Earth
- 8. direction planets revolve around sun
- 9. rocks orbiting sun
- 13. product made from apples
- 14. men put on the moon in this program
- 18. heat transfer using waves
- 20. takes more than 100 yrs to replace
- 21. tide with straight line of objects
- 23. the s in mrs. cent
- 24. holds the planets in place
- 26. smallest planet
- 28. name of our dwarf planet
- 29. name used for oil, natural gas, and coal
Down
- 1. solar system with earth in middle
- 3. heat transfer using gases or liquids
- 5. can be replenished in less than 100 yrs
- 7. type of energy from eating food
- 10. potential plus kinetic
- 11. first man in space
- 12. # of heat transfers can happen at once
- 15. type of gases that absorb sun's heat
- 16. the law of conservation of
- 17. example of nuclear energy
- 19. our nearest star
- 21. type of galaxy we live in
- 22. astronomer under house arrest for life
- 25. tide with 90 degree angle of objects
- 27. name of telescope in space
- 30. why moon lights up