| A | B |
|---|
| Transform (sliding) boundary in California - cause of frequent earthquakes | San Andreas Fault,  |
| Plates collide or press into each other causing ocean trenches | convergent plate boundary,  |
| Earth's thin rocky outer layer | Earth's crust,  |
| Plates spread apart- causes mid-ocean ridges as magma comes through the opening | divergent plate boundary,  |
| Solid iron and nickel | Earth's inner core,  |
| Thickest layer, just under the crust, made of rock (solid rock closer to the crust) | Earth's mantle,  |
| Mountain ridge that stretches down the middle of the Atlantic Ocean- Divergent plate boundary (plates moving apart) | Mid-Atlantic Ridge,  |
| Appear at divergent plate boundaries as plates separate and magma rises through opening | mid-ocean ridge,  |
| Molten (melted) iron and nickel | Earth's outer core,  |
| Area around Pacific Ocean with heavy volcanic activity due to plate movement | Ring of Fire,  |
| One plate drops under the other when plates collide (convergent boundaries) | subduction,  |
| Plates slide against each other - often causes earthquakes | transform (sliding) boundaries,  |
| Deepest parts of ocean- made when ocean plates collide. One plate slips under the other | ocean trench,  |
