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Plate Tectonics What is the lithosphere? The lithosphere is made up of the Earth’s _________________ and the upper ______________. The asthenosphere is the layer of hotter, What is the asthenosphere? softer rock in the _________________mantle on which the lithosphere “sits.” A German scientist who hypothesized the Who is Alfred Wegner? _____________________________________. What is continental drift? What is Pangaea? A _____________ that all the continents were once joined together in ____________ _________________________. Pangaea is the name Wegener gave to the supercontinent. The word comes from the Greek word meaning, “_________________.” It was centered where _______________ is today and reached from pole to pole. 1.) What evidence do we have that continental drift occurred? 2.) 3.) -Pieces of Earth’s ______________ are in What is the theory of plate tectonics? slow, constant ____________________. -Movement is caused by ____________________ in the mantle. -Plates move in _____________________types of behavior -Tectonic plates are made of ________________________________________________. What is a plate boundary? What can happen in the places where tectonic plates meet? What are the three types of plate boundaries? A plate boundary is where the edges of two plates ___________________________________________. Most major _______________________, ______________, and ________________ __________________ occur where tectonic plates meet. 1.) Divergent boundary – occurs where plate ____________/______________ apart – found mainly in the ocean, but can be found on land 2) Convergent boundary – occurs where two plates ____________ 3) Transform boundary – occurs where plates ______________/_____________ past each other. _________________ occur when two plates move past each other. What features are found at divergent boundaries? New _______________, mid-ocean ____________, rift _____, ___________________ splitting apart, ________________, and ________________ can be found at divergent boundaries. What features are found at convergent boundaries? What features occur at transform boundaries? Folded ________________, ocean ____________, and ________________ form at convergent boundaries. Crust can be destroyed where plates __________________________. __________________ occur at transform boundaries. Crust is neither _______________ nor ______________________.
