1. which layer of the earth do convection currents occur in? (1pt)

2. explain how these convection currents cause the crust of the earth to
move. (5pts)

directions: read the lesson tab in the lesson to answer questions 3 through 8

3. according to the theory of continental drift, what did the earth’s continents look like 255 million years ago? what is the name of this landmass? (2pts)

4. what is the petoskey stone, and where was it found? (2pts)

5. how does the petoskey stone prove the theory of continental drift? (5pts)

6. how does the shape and size of the continents today support the theory of continental drift? (5pts)

7. explain how looking at the magnetism of certain rocks support the idea that the continents have moved and changed over time. (5pts)