Across
- 2. theory of how magnetic fields are made
- 5. greenhouse gases
- 6. a surfaces ability to reflect sunlight
- 9. what we breath
- 11. makes up the ozone layer
- 12. tropic of cancer is here
- 14. closest star to earth
- 17. used in aerosol spray
- 18. made from internal activity
- 19. building block of every thing we need
- 20. movement of earths axis
Down
- 1. Big wave
- 3. area around a planet made up of a planets magneticfield
- 4. atom gives off radiation in the form of energy
- 7. point of orbit that is closest to the sun
- 8. protects from suns radiation
- 9. region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation
- 10. angle between the 2 norths
- 12. 1 day
- 13. positive particle of a atom
- 14. brightest star in the north
- 15. always points north
- 16. 24 hours