Inside the Earth

5. forms when one plate sinks beneath another
7. created at a transform boundary
9. plates float on this layer
11. cause tectonic plates to move due to temperature differences inside the earth
12. layer that makes up 67% of earth's mass
13. where two tectonic plates meet
14. most dense layer made of solid iron and nickle

1. the idea that the continents were once connected and have since moved to their current position
2. form on the seafloor where plates diverge
3. thinnest layer of Earth
4. boundary created where plates pull apart
6. boundary that creates trenches, mountains, and volcanoes
8. pieces of this layer are called tectonic plates
10. liquid layer of iron and nickle