Continental Drift

2. the layer of Earth that is believed to be responsible for plate movement
4. scrapes across rocks where a glacier once was
5. currents that are found in the mantle and cause the tectonic plates to move
7. "super-continent"
10. continents fit together like ________ pieces
12. this theory states that the continents were once joined together to form a "supercontinent"

1. the Earth is made up of ________ ________ which are constantly moving above the mantle
3. South America matches up with this continent
6. rock formations, rivers, and lakes appear to match up on different continents due to this piece of evidence
8. the scientist who is generally credited with the continental drift theory
9. evidence of dead plants and animals
11. this piece of evidence explains why palm tree fossils have been found in very cold regions of the Earth