Plate Motion Vocabulary

3. last name of the German scientist who created the Continental Drift Theory
4. A type of boundary where two plates move towards each other
5. One of the very large sections of hard, solid rock that make up Earth’s outer layer
7. an extinct reptile that lived about 300 million years ago
14. A system of ideas intended to explain something, aka hypothesis
15. A feature that forms on the surface of a planet such as a mountain, channel, or sand dune
16. An underwater mountain range formed when two plates move apart
17. The slow pulling apart of land that is caused by plate movement
20. Any of Earth’s main continuous areas of land; Africa, Asia, North America, South America, Antarctica, Europe, Australia
21. A landform that only forms at convergent boundaries

1. A type of boundary where tow plates move away from each other
2. The hypothetical landmass that existed when all the continents were joined, from about 300-200 million years ago.
6. The scientific name for 'outer layer'
8. a set of interacting parts forming a complex whole
9. A sudden shaking of Earth’s surface
10. hot liquid underneath Earth's surface
11. A system of ideas intended to explain something, aka hypothesis
12. How much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (its mass)
13. section a diagram that shows what the inside of something looks like
17. A type of current that occurs when there are significant differences in temperature between two parts of a fluid. When this happens, hot fluids rise and cold fluids sink.
18. A type of boundary where two plates slide against each other
19. How often or fast something happens