volcanos

how do they form

what is a volcano

were do volcanoes form

Volcano definition- they are a vent in earths crust that spews lava

magma definition- it is molten rock that flows up from the ground

volcanic eruptions constantly shape earths surface

tectonic plates move to make volcanos

60 potentially active volcanos

occur over hot spots

types of volcanos

:

cinder clones

shield

volcanic eruptions

lava flows are deadly

viscosity- a liquids distance to flow

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lava - same as magma just above surface

conver bount

sub zones

magma less dence

div bount

plates separate lav flows

hot spots

weak spots that flow lava

composit

large gental slopes

quied erouptions

allong div bount

large steep sides

explosive eruptions

on div bount

small steep sides

mederocor explosions

no bounties

parts of a volcano

vent

crater

pipe

Magma Chamber

side vent

ash cloud

lava flow

quiet

slowly go of

low vciscosity

kinna like water

explosive

high pressure

high viscous lava

top is plugged

Viscosity - it running ness of the lava

at volcanos

efects of volcanos

fires

storms in the clouds

pyvrastic flow

mount st hellens

started may 18,1980

march 16 , activity recorded

march 27 steam explosion

may small eruptions and lava

myths

pompe11

vacation place for wealthy

it was super advanced

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happened 1 day after fire vestal

13 to 20 ft of ash