What are plate boundaries: A plate boundary is a three-dimensional surface or zone across which there is a significant change in the velocity (speed or direction) of motion of one lithospheric plate relative to the adjacent lithospheric plate. There are three types of plate boundary:

The three types of plate boundaries:

Constructive{divergent}: Divergent boundaries are the zones where two tectonic plates are moving away from one another. Divergent boundaries are constructive boundaries because new crust is generated by magma pushing up from the mantle as the plates pull away from each other.
Destructive{convergent}: where plates are moving towards each other and old crust is either dragged down into the mantle at a subduction zone or pushed upwards to form mountain ranges.
Conservative: A Conservative plate boundary is where two crustal plates slide past each other, and the movement of the plates is parallel to the plate margin. The plates move with relative horizontal movement which is either sinistral (left) or dextral (right).

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Comments (6)

indu marath

Aug 30

1.What is a transform plate boundary?

2.What is the Ring of Fire?

3.How do plate tectonics contribute to the formation of mountains?

4.What is a subduction zone?

5. What is the significance of mid ocean ridges?

Eshaaan

Aug 31

Replying to

Transform boundaries are places where plates slide sideways past each other. At transform boundaries lithosphere is neither created nor destroyed.
The Ring of Fire, also referred to as the Circum-Pacific Belt, is a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
Mountains form where two continental plates collide. Since both plates have a similar thickness and weight, neither one will sink under the other. Instead, they crumple and fold until the rocks are forced up to form a mountain range.
Subduction zones are where Earth's tectonic plates dive back into the mantle, at rates of a few to several centimeters per year.
The vast majority of volcanic activity on the planet occurs along the mid-ocean ridge, and it is the place where the crust of the Earth is born. The material that erupts at spreading centers along the mid-ocean ridge is primarily basalt, the most common rock on Earth.

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