grade 7 geography

3. a place where two plates of the lithosphere move away from each other
6. molten rock flowing from a volcano
7. the point on Earth's surface directly above the location of an earthquake
9. release of energy through Earth's crust due to changes taking place beneath it
11. a circular motion created when warmer material rises and draws down cooler material, which replaces it
13. soft weak layer under the lithosphere upon which the tectonic plates move
15. the outer, solid layer of Earth made up of moving plates
16. the natural features that make up Earth's surface
17. a large, flat to gently rolling region

1. the wearing away of Earth's surface by wind, water, or glacial action
2. the breaking down of rocks by physical or chemical processes
4. the theory that Earth's surface is made up of rigid plates that are pushed by forces inside the planet
5. a high, flat region that has been lifted up by movement of Earth's surface
8. a place where side-by-side plates grind past each other
10. an opening in Earth's rust from which molten rock or magma escapes to reach the surface
11. a place where two plates of the lithosphere come together
12. a tool that measures and records the magnitude and duration of a disturbance of the ground, especially earthquake
14. the base rock of an ancient mountain region that has been worn away, leaving a flat, rocky landform region