structure of a volcano

Question 1

What is a composite volcano

Answer 1

have alternate layers of lava and ash

Question 2

Shield volcano def

Answer 2

have gentle slopes

Question 3

Dome volcano def

Answer 3

have steep slopes

Question 4

When did Mt St helens erupt and where

Answer 4

1996 in secondary vent

Question 5

When did Mt Ontake erupt and where

Answer 5

2014 in the main vent

Question 6

extinct def

Answer 6

a volcano that has not erupted in historic times and is not expected to erupt again

Question 7

dormant def

Answer 7

a volcano that has erupted in historical times but not recently

Question 8

active def

Answer 8

a volcano that has erupted recently and is expected to erupt again

Question 9

What happens when a volcano erupts

Answer 9

Ash clouds and volcanic bombs (large mass of partially molten rock) are thrown into the air

Question 10

Pyroclastic flow def

Answer 10

A pyroclastic flow is a hot mixture of rock fragments, gas, and ash that travels rapidly (tens of meters per second) away from a volcanic vent or collapsing flow front.