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| 2 | the man who came up with the Continental Drift theory | 
 
 
| 4 | ____ currents in the mantle cause the plates to move | 
 
 
| 5 | the type of boundary where two plates move toward each other | 
 
 
| 6 | the type of boundary where two plates pull away from each other | 
 
 
| 7 | the missing piece of evidence about continental drift was how the __ ____ spreads | 
 
 
| 8 | the type of zone where the denser plate sinks under the less dense plate | 
 
 
| 9 | the continents that made up Pangaea fit together like a _______________ | 
 
 
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