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Volcanoes

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Janelle Nader

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Cards in this guide (7)
How does an earthquake cause a tsunami

If there is an Earth quake under the bed of the ocean and as a result the bottom is lifted upwards, then all of a sudden there is a whole heap of water being pushed upwards as well. If this happen on land the land would become higher and stay there, however when it happens to water it forms a wave as the surface of the ocean levels out again, this wave can have an enormous amount of water and force behind it depending on how much the seabed has lifted and can be bad news for any one on shore in its path.

Which region has the greatest amount of earthquake activity

sss

What do you call the various type that ejected by a volcano

During a volcanic eruption, lava, tephra (ash, lapilli, volcanic bombs and blocks), and various gases are expelled from a volcanic vent or fissure.

The Ring of Fire is a long belt of volcanoes that nearly circles the Pacific Ocean What process formed these volcanoes

Convergent plate volcanism

A volcano may erupt explosively or quietly Which factor has the least effect on the power of a volcanic eruption

Height of the main vent of the volcano

Volcanoes may release a variety of materials when they erupt What do they always release in large amounts

A mixture of gases

A caldera is a depression in a volcanic mountain A caldera may form when

The mountain collapses into an emptied magma chamber

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