Plate Tectonics
Across
- 2. fossils that are widespread come from organisms that lived over a short period of time
- 3. the thin,solid,outermost layer of the earth
- 4. the theory that the crust is divided into large pieces that are called tectonic plates that move
- 7. two part layer of the earth below the mantle with a liquid outer core and and solid inner core
- 9. Huge pieces of crust that slowly moves on the upper;delicate part of the mantle
Down
- 1. is the theory that continents were connected but have been drifted apart
- 5. the mineralized remains of organisms to show how long they lived and there bodies were structured
- 6. the solid layer of earth between the crust and the core: made of dense silicates
- 8. the top of the mantle