Answer:
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Step-by-step explanation:
- Tectonic plates are composed of oceanic lithosphere
- each is topped by its own kind of crust.
- Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere.
-Plate motions range up to a typical 10–40 mm/year (Mid-Atlantic Ridge; about as fast as fingernails grow), to about 160 mm/year (Nazca Plate; about as fast as hair grows).
-Where the plates meet, their relative motion determines the type of boundary: convergent, divergent, or transform.
- Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries.
- Plate boundaries are commonly associated with geological events such as earthquakes and the creation of topographic features such as mountains, volcanoes, mid-ocean ridges, and oceanic trenches
- The majority of the world's active volcanoes occur along plate boundaries, with the Pacific Plate's Ring of Fire being the most active and widely known today.
-Three types of plate boundaries exist, with a fourth, mixed type, characterized by the way the plates move relative to each other. They are associated with different types of surface phenomena.
- Plate tectonics is the theory explaining the movement of the earth's plates and the processes that occur at their boundaries.