| A | B |
|---|
| Pangaea | The name of a single landmass that broke apart 200 million years ago and gave rise to today's continents |
| Continental Drift | The hypothesis that the continents slowly move across Earth's surface |
| Fossil | A trace of an ancient organism that has been preserved in rock |
| Who developed the ideas that the continents were once joined and have since drifted apart? | Alfred Wegener |
| Why did most scientists reject Wegener's theory? | He could not identify a force that could move the continents |
