mountains

4. Solid material extending all the way to earth's core
5. Layer of rock that forms earth's "skin"
6. Transfer of heat by the movement of a heated fluid
7. Sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added
9. Uppermost part of the mantle and the crust for a ridge layer about 100 kilometres thick
10. Measure of how much mass there is in a volume of a substance

1. Softer part of mantle below the lithosphere which is hotter under increased pressure
2. Scientist who discovered the movement of tectonic plates
3. The transfer of energy through empty space, has no direct contact between heat source and object.
8. Heat transfer by direct contact of particles of matter.