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section summary purp
section summary purple
word | definition |
---|---|
plate | A slab of Earth's lithosphere that can move around on the planet's surface. |
scientific theory | A well-tested concept that explains a wide range of observations about a particular scientific question |
plate tectonics | The theory that states that pieces of Earth’s lithosphere are in constant, slow motion, driven by convection currents in the mantle. |
fault | A break in Earth's lithosphere where one block of rock moves toward, away from, or past another. |
transform boundary | Two plates sliding horizontally past each other. |
divergent boundary | Place where two of Earth's tectonic plates are moving apart |
rift valley | a deep valley that forms when two plates drift apart |
convergent boundary | a boundary between lithospheric plates where the plates move toward one another and one plate is recycled into the mantle |