| A | B |
|---|
| continental drift | The continents drifted apart |
| Pangaea | one giant land mass |
| crust | the layer we live on |
| mantle | the layer made of soft, pliable rock |
| inner core | solid part of the core |
| outter core | a liquid layer of the carth |
| plates | large parts of the earths' crust |
| sea floor spreading | forms new crust |
| Ring of Fire | found on the boundary of the Pacific plate. |
| North American Plate | the plate we live on |
| rift | a large crack in the ocean floor |
| continental plates collide | forms mountains |
| fault | crack in the crust of the earth where rock moves |
| normal fault is caused by | forces of tension |
| reverse fault is caused by | forces of compression |
| strike-slip fault caused by | shearing forces |
