Across
- 3. The complete range of electromagnetic waves
- 6. the study of the universe
- 8. Tide just after a new or full moon
- 12. Process by which plants and organisms need light and water to live
- 16. Incoming solar radiation
- 17. The turning or spinning of a body on its axis.
- 19. Planets made primarily out of gas
- 21. tide after a first or quarter moon
- 22. large cloud of dust and gas in space
- 23. The center of mass of two or more bodies orbiting around each other:
- 24. Either of the two times in the year, the summer solstice in the N or S hemisphere
- 25. The direct transfer of heat from one substance to another
Down
- 1. The process by which larger nucleus's are split into smaller peices
- 2. Two times of the year on which neither hemisphere is tilted toward or away from the sun
- 4. The point at which the planets orbit their furthest away from the sun
- 5. Shortwave emitted by the sun
- 7. The process by which smaller nuclei merge together to make a larger one
- 9. Process by which in fluid is being heated:
- 10. The transfer of energy by electromagnetic waves
- 11. A stream of electrically charged particles produced by the sun
- 13. the motion of a body, such as a planet or moon
- 14. The point in a planet's orbit at which it is closest to the sun
- 15. The wobbling of Earth's axis
- 18. The process of burnign something
- 20. is a slow motion of Earth's axis