volcanoes Flashcards

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1
Q

Formation of volcanoes

A

1) 2 plates collide/separate, magma rises and fills the vent. this is an eruption + can be violent due to the pressure
2) Magma wells up from the magma chamber, cools + hardens when it reaches the surface
3) After lots of eruptions layers of ash + magma build up around the vent + a cone shaped mountain is formed, with the lava flowing from the crator

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2
Q

Describe + give an example of an active volcano

A

A volcano that erupted in the last 10,000 years
Eg. Mount St. Helens, North America

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3
Q

Describe + give an example of a dormant volcano

A

A volcano that hasn’t erupted in 10,000 years, but is expected to
eg. Killimanjaro, Tanzania

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3
Q

Describe + give an example of an extinct volcano

A

A volcano that is not expected to erupt, ever again
eg. Mnt Kenya, Kenya

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4
Q

Name 2 social benefits of the E15 eruption

A

Reduced unemployment
Increased tourism + employment

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5
Q

Name 2 economic benefits of the E15 eruption

A

Generated income
Fertile soil

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6
Q

Name 2 negative social impacts of the E15 eruption

A

Contaminated water supply
locals evacuated

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7
Q

Name 2 negative economic impacts of the E15 eruption

A

Travel chaos
Loss of earnings

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