What is a constructive plate boundary GCSE?
At a constructive plate boundary – also known as a divergent plate boundary – the plates are moving apart from one another. When this happens, the magma from the mantle rises up to make (or construct) a new crust.
Where are constructive plate boundaries?
Constructive (tensional) plate margins occur where plates move apart. Examples below include the South American Plate and African Plate and the Eurasian Plate and North American Plate. Constructive boundaries are mainly located under the sea, e.g. the Mid Atlantic Ridge.
What are the 3 types of plate boundaries are they considered constructive or destructive?
There are three main types of plate boundary. These are convergent (destructive), divergent (constructive) and conservative. The direction of plate movement dictates the features and processes associated with each tectonic plate boundary.
What does a constructive plate boundary cause?
At a constructive plate margin the plates move apart from one another. When this happens the magma from the mantle rises up to make (or construct) new land in the form of a shield volcano. The movement of the plates over the mantle can cause earthquakes.
What is constructive plate boundary?
At constructive plate boundaries, the tectonic plates are moving away from one another. The Earth’s crust is pulled apart to create a new pathway for rising hot magma to flow on to the surface. Volcanoes can sometimes form in these setting; one example is Iceland.
What are constructive and destructive plate boundaries?
A constructive plate boundary occurs when two plates move away from each other. Find out more about constructive plate margins. A destructive plate boundary occurs when an oceanic plate is forced under (or subducts) a continental plate.
How do constructive plate boundaries form?
A constructive plate boundary, sometimes called a divergent plate margin, occurs when plates move apart. Volcanoes are formed as magma wells up to fill the gap, and eventually new crust is formed. An example of a constructive plate boundary is the mid-Atlantic Ridge.
How is a constructive plate boundary formed?
What is constructive and destructive plate boundaries?
They are called constructive plates because when they move apart, magma rises up in the gap- this forms volcanoes and eventually new crust. One example is the Mid-Atlantic Ridge, where the gap can be found in Thingvellir, Iceland. Destructive plate boundaries are when oceanic and continental plates move together.
What is the difference between a constructive and destructive plate boundary?
What’s the difference between constructive and destructive plate margins?
What is an example of a constructive plate boundary?
The East African Rift (Great Rift Valley) in eastern Africa.
What happens at a constructive plate boundary?
Constructive plate boundaries are divergent zones where the Earth forms new crust through the cooling of lava. The Internet Geography website states that most of these boundaries occur under the ocean. As the plates move apart, they form openings in the crust that allow hot magma to rise to the surface. As this magma cools, it increases the size of the plates.
What plate boundaries are the most destructive?
Earthquakes. It can be generated by movements along fault zones associated with plate boundaries.…
Why are plate boundaries sometimes called destructive plates?
A destructive plate boundary is sometimes called a convergent or tensional plate margin. This occurs when oceanic and continental plates move together. The oceanic plate is forced under the lighter continental plate. Friction causes melting of the oceanic plate and may trigger earthquakes. Magma rises up through cracks and erupts onto the surface.