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Java Games: Flashcards, matching, concentration, and word search. |
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Gr. 8: Ch.1, Section 4: Sea-Floor Spreading
Vocabulary and Definitions
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| mid-ocean ridge | The undersea mountain chain where new ocean floor is produced; a divergent plate boundary |
| sonar | A device that determines the distance of an object under water by recording echoes of sound waves. |
| subduction | The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary. |
| deep-ocean trench | A deep valley along the ocean floor through which oceanic crust slowly sinks towards the mantle. |
| sea-floor spreading | The process by which molten material adds new oceanic crust to the ocean floor. |
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Speech-Language Pathologist |
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