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LEbronnnn!
science
| Question | Answer |
|---|---|
| Continental drift | The hypothesis that continents slowly move across Earth's surface. |
| Pangaea | The name of the single landmass that began to break apart 200 million years ago and gave rise to today's continents. |
| fossil | The preserves remains or traces of an organism that lived in the past. |
| Mid-ocean ridge | An undersea mountain chain where new ocean floor is produced, a divergent plate boundary. |
| Sea -floor spreading | The process by which molten material adds new oceanic crust to the ocean floor. |
| Deep-ocean trench | A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle. |
| Subduction | The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary. |
| plate | A section of the Lithosphere that slowly moves over the Asthenosphere, carrying pieces of the continental and oceanic crust. |
| Divergent boundary | A plate boundary where two plates move away from each other. |
| transform boundary | A plate boundary where two plates move past each other in opposite directions. |
| plate tectonics | The theory that pieces of the Earth's Lithosphere are in constant motion, driven by convection currents in the mantle. |
| fault | A break in Earth's crust along which rocks move. |
| rift valley | A deep valley forms that where two plates move apart. |
| Convergent boundary | A plate boundary where two plates move toward each other. |
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