RESTLESS EARTH

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HOW IS AN OCEAN TRENCH FORMED?
Ocean Trenches are deep water areas that run along a coastline which has a destructive plate margin. They are created by subduction, and mark the point where the Oceanic crust is being pushed under the Oceanic crust.
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HOW ARE FOLD MOUNTAINS FORMED?
They can be formed at destructive or collisional plate boundaries, where tectonic plates are moving together forcing layers of rock to be crumpled upwards.
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HOW ARE VOLCANOES FORMED?
Volcanoes form when magma reaches the Earth's surface, causing eruptions of lava and ash. They occur at destructive (compressional) and constructive (tensional) plate boundaries.
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HOW ARE SUPERVOLCANOES FORMED ?
They begin with a column of magma rising through a vent into the Earth’s crust. The magma gets stuck and pools, melting the rock around for thousands of years. Over thousands of years the pressure builds up and when the eruption eventually happens
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HOW ARE EARTHQUAKES FORMED ?
Earthquakes are caused by the release of built-up pressure inside the Earth's crust.
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HOW ARE TSUNAMIS FORMED?
A tsunami is a huge wave, usually caused by volcanic or earthquake activity under the ocean, which can eventually crash onto the shoreline.
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Other cards in this set

Card 2

Front

HOW ARE FOLD MOUNTAINS FORMED?

Back

They can be formed at destructive or collisional plate boundaries, where tectonic plates are moving together forcing layers of rock to be crumpled upwards.

Card 3

Front

HOW ARE VOLCANOES FORMED?

Back

Preview of the front of card 3

Card 4

Front

HOW ARE SUPERVOLCANOES FORMED ?

Back

Preview of the front of card 4

Card 5

Front

HOW ARE EARTHQUAKES FORMED ?

Back

Preview of the front of card 5
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