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SYCMS Chpt 4- PT
Plate Techtonics Study Guide
| Question | Answer |
|---|---|
| Mid-Ocean Ridge | an undersea mountain chain where new ocean floor is produced |
| Subduction | the process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a colliding plate boundary. |
| Fossil | a trace of an ancient organism that has been preserved in rock. |
| Sonar | |
| Sea-Floor Spreading |