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Flashcards in Volcanic Hazards Deck (10)
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1
Q

What are some primary volcanic hazards?

A
  • lava flows
  • pyroclastic
  • ash
  • gases
2
Q

what are some secondary hazards of volcanoes?

A
  • fires
  • flooding and tsunami
  • earthquakes and debris landslides
  • mudflows (lahars)
3
Q

secondary hazards are…

A

caused by the volcano but less directly related

4
Q

where do we get the term plinion eruptions?

A

from the eruption of Mt. Vesuvius, in Pompei, Italy, which was recorded and described by Pliny the Younger

5
Q

what are the tertiary effects of volcanic activity?

A
  • have the power to completely reshape the landscape. new land is formed. Can cause mountains to grow. Can destroy mountains.
  • climate change
  • rich volcanic soil
  • geothermal energy
  • rising magma can bring mineral deposits to the surface
6
Q

In the short term are temperatures lowered or raised as a result of volcanic eruption?

A

lowered

7
Q

why are temperatures lowered after eruption?

A

volcanoes release so much ash and gases into the atmosphere that they actually block out sunlight and cause more cloudiness.

8
Q

In the longterm are temperatures raised or lowered as a result of volcanic eruptions?

A

raised

9
Q

What are some beneficial tertiary effects of volcanoes?

A
  • rich volcanic soil
  • geothermal energy
  • rising magma can bring mineral deposits to the surface
10
Q

Volcanic soils cover ___ percent of land surface but feed ____ percent of the population

A

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