Across
- 6. the breakdown and transport of rock by wind or water
- 8. gases that trap heat and warm the earth
- 11. plate _________ is the theory that Earth's crust is broken into large plates that move
- 13. daily rainfall and temperatures
- 14. remains of ancient plants or animals
- 15. theory that describes the formation of our universe
Down
- 1. weather conditions over a long period of time
- 2. every living thing contains this element
- 3. degree of compactness of a substance
- 4. rising and falling of the sea due to the pull of the moon and the sun
- 5. supercontinent consisting of multiple continents
- 7. movement caused by unequal temperatures and densities
- 9. imaginary line around the Earth dividing the northern and southern hemispheres
- 10. luminous, gaseous, spheroidal celestial body of great mass
- 12. when two atomic nuclei combine, it's called nuclear _________