the three boundaries:
Convergent Boundary: A convergent boundary (also named Destructive Plate Boundary) is an active deforming region. Which means two or more tectonic plates or fragments of the lithosphere move toward one another and collide.
Divergent Boundary: In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a feature that exists between two tectonic plates that are moving away from each other.
Transform Boundary: A transform fault or transform boundary, also known as conservative plate boundary since these faults neither create nor destroy lithosphere, is a type of fault whose relative motion is predominantly horizontal in dextral direction.
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Convection Currents: Convection currents are created by the very hot material at the deepest part of the mantle rising, then cooling, sinking again and then heating, rising and repeating the cycle over and over. When the convection currents flow in the mantle they also move the crust.
Oceanic Crust: An ocean current is a continuous, directed movement of seawater generated by the forces acting upon this flow, such as breaking waves, wind, Coriolis Effect, and temperature differences and tides caused by the gravitational pull of the Moon and the Sun. Shoreline configurations and interaction with other currents influence a current's direction and strength.
Continental Crust: The continental crust is the layer of igneous, sedimentary, and metamorphic rocks which forms the continents and the areas of shallow seabed close to their shores, known as continental shelves. Consisting mostly of granitic rock, continental crust has a density of about 2.7 g/cm3 and is less dense than the material of the Earth's mantle, which consists of ultramafic rock