Across
- 4. A measurement of amount of radiation is reflected by a surface
- 6. Where bubbles show the composition of the atmosphere
- 7. long term condition of a region
- 8. Changing speed of direction
- 11. low point of a transverse wave
- 12. Clear sky dry no rain
- 13. high point of a transverse wave
- 14. Stars moving away from earth
- 15. Stars moving towards the earth
- 17. Short term condition of an area
- 18. Splitting of nucleus into smaller nuclei
- 19. Attractive force between two objects
- 20. Two or more nuclei combining
Down
- 1. The farther a galaxy is from earth the faster its moving from earth
- 2. Ancient radiation left over from the big bang
- 3. The of waves per second ( Hertz)
- 5. distance between a crest and a crest or a trought and a trought
- 9. cloudy sky moist precipitation
- 10. The tendency of an object o resist any change in motion
- 16. A push or pull