Plate Tectonics. What are Plate Tectonics?. A theory that Earth’s Surface is divided into a few large plates that are constantly moving and changing shape. Geological evidence indicates that the face of Earth's surface has changed significantly since its initial formation.
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A supercontinent that broke apart 200 million years ago to form the present continents.
Volcanoes occur along the earth's tectonic plates where molten rock is forced upward from magma reservoirs deep in the earth. A volcano is a mountain formed of lava and/or tephra.
An earthquake happens when two plates rub together. The plates travel in different directions and also at different speeds. If one plate is forced underneath the other, pressure builds up until the plates rip apart. This process causes the ground to move which is known as an earthquake.
A fault is a crack in the Earth’s crust. Faults are typically associated with/form the boundaries between Earth’s tectonic plates.