Volcanic Hazards

Question 1

What are some primary volcanic hazards?

Answer 1

• lava flows
• pyroclastic
• ash
• gases

Question 2

what are some secondary hazards of volcanoes?

Answer 2

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

Question 3

secondary hazards are…

Answer 3

caused by the volcano but less directly related

Question 4

where do we get the term plinion eruptions?

Answer 4

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

Question 5

what are the tertiary effects of volcanic activity?

Answer 5

• 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

Question 6

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

Answer 6

lowered

Question 7

why are temperatures lowered after eruption?

Answer 7

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

Question 8

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

Answer 8

raised

Question 9

What are some beneficial tertiary effects of volcanoes?

Answer 9

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

Question 10

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

Answer 10

1, 10