Across
- 1. type of plate boundary where plates collide with each other
- 4. matter building up in layers
- 6. theory that states Earth is covered in patches of crust called plates, which are pushed along by the convection currents in the Earth’s mantle
- 7. hot, molten middle layer of the Earth, made of denser elements
- 9. cool outermost layer of the Earth, made of the least dense elements
Down
- 1. this type of crust is thick (10-70 km) and not dense
- 2. this type of crust is thin (5-7 km) and dense
- 3. type of plate boundary where plates move away from each other
- 5. hot, solid, center of the earth made of the densest elements
- 8. type of plate boundary where plates slide horizontally alongside each other