Are plate tectonics constructive or destructive?

Are plate tectonics constructive or destructive?

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 type of plate boundary occurs when two plates are splitting apart?

Divergent boundaries
Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle.

What are plates that split apart called?

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. Illustration by Joshua Doubek, courtesy Wikimedia.

Are convergent plate boundaries constructive or destructive?

A convergent plate boundary also known as a destructive plate boundary , usually involves an oceanic plate and a continental plate. The plates move towards one another and this movement can cause earthquakes and volcanoes. As the plates collide, the oceanic plate is forced beneath the continental plate.

What happens when plates pull apart?

The plates diverge and this causes the construction of new rock. It happens when two tectonic plates pull apart and rock from the mantle rises up through the opening to form new surface rock when it cools. It happens at the start of a new ocean and continues at the mid-ocean ridge while the ocean is opening.

Which statement best describes what happens between two plates as they separate?

The plates separate from each other creating new crust in the process. Why are mountain ranges created where two continental plates converge? Neither plate is subducted; instead, both are lifted up forming a mountain range.

When plates move apart This is an example of a?

Divergent boundaries occur where two plates move apart from each other. This happens at the mid-ocean ridges, where seafloor spreading and volcanic activity continuously add new oceanic crust to the oceanic plates on both sides. Examples are the Mid-Atlantic Ridge and East Pacific Rise.

What is the difference between 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 happens when the plates move towards each other?

The plates move towards one another and this movement can cause earthquakes. As the plates collide, the oceanic plate is forced beneath the continental plate. This is known as subduction. This happens because the oceanic plate is denser (heavier) than the continental plate. When the plate sinks into the mantle it melts to form magma.

What are destructive plate margins and what causes them?

They are caused by the movement of tectonic plates. Tectonic hazards can destroy buildings, infrastructure and cause deaths. A destructive plate margin usually involves an oceanic plate and a continental plate.

How are shield volcanoes formed at constructive plate margins?

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.

https://www.youtube.com/watch?v=hCPyLiEo-d8