r16z
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#1
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#1
Why do most earthquakes and volcanoes occur near plate margins?
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Hazelly
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#2
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Hello,
The main reason is because the plates move against each other causing friction causing a tectonic hazard. The gaps that are left in within the plates allows the mantle to arise.
Have a look at Bitesize, they have quizzes you can complete and answers to your questions:

https://www.bbc.co.uk/bitesize/guide...sg8/revision/1
Last edited by Hazelly; 2 years ago
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SmartUnicorn
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because the plates move against each other and leaves small gaps which creates volcanoes and earthquakes ! lol sorry if this info is wrong 😂
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r16z
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#4
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It's says must include the following words: convection currents, tectonic plates, plate boundaries, collision and energy
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naem071
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#5
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(Original post by Rutbata)
It's says must include the following words: convection currents, tectonic plates, plate boundaries, collision and energy
Convection currents from within the mantle rise to the asthenosphere (the semi-molten layer on which the tectonic plates rest). The currents cause the plates to move apart, where two plates diverge (divergent boundary) magma rises and a volcano is formed.

Where two plates converge (convergent boundary), one of three scenarios could take place. If two continental plates converge, one will subduct and create a rift valley where rift volcanoes can be found. Where two oceanic plates converge, one plate subducts and a volcanic island arc forms. Where one oceanic plate and continental plate converge, the oceanic will subduct as it is denser and this in turn produces a volcano over time. Young fold mountains are commonly seen at convergent boundaries and are formed via orogeny. Earthquakes are very powerful here due to energy released from the friction created during subduction, and magma is formed as subduction melts the plates.

Conservative boundaries are where the tectonic plates slide and jolt past one another laterally, with neither subducting. Incredibly powerful earthquakes form here due to sheer amounts of energy released via friction. At collision boundaries, the plates collide into each other forming fold mountains and this is also accompanied with violent earthquakes.
Last edited by naem071; 2 years ago
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