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volcano Flashcards

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1
Q

help Earth release heat
so that it can cool off.

A

volcanoes

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2
Q

Volcanoes are the __________ into
the interior of Earth

A

windows

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3
Q

volcano robots

A

-robovolc
-dante II
-spiderbot

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4
Q

is a vent
or ‘chimney’ that
connects molten rock
(magma) from within
the Earth’s crust to
the Earth’s surface.

A

volcano

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5
Q

‘volcano’ comes
from the island ______
which is a volcanic island in

Italy.

A

vulcano

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6
Q

The island
actually gets
its name from
the Roman
god of fire

A

vulcan

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7
Q

This is the outer layer of the
earth. It varies in thickness
from 0 – 60km thick. It is not
even and is made up of pieces
which overlap to cover the
entire planet. These pieces are
called ‘tectonic plates’.

A

crust

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8
Q

is approximately
2897km thick and is made of
a solid, rocky substance
called molten rock or
magma. This is what
escapes when a volcano
erupts.

A

mantle

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9
Q

a liquid layer
made out of molten iron and nickel.
This liquid metal creates the earth’s
magnetic field.

A

outer layer

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10
Q

This is a solid layer and is made of
iron and nickel. It is the hottest
part of the earth and can reach
temperatures of up to 5500oC!

A

inner core

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11
Q

how many volcanoes

A

452 volcanoes

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12
Q

stages of volcano

A

active
dormants
extinct

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12
Q

is an
area of the Pacific
Ocean that is shaped
like a horseshoe.

A

ring of fire

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13
Q

has erupted recently, and there is the possibility
that it may erupt again.

A

active

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14
Q

is one which has erupted
thousands of years ago, but it will
probably never erupt again.

A

extinct

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14
Q

one that has not erupted for a long time, however, it may
still erupt in the future.

A

dormant

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15
Q

the resistance created when

one surface rubs
against another.

A

friction

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16
Q

An opening in the
surface of the Earth
through which volcanic
materials, such as
magma, can escape.

A

vents

17
Q

A cloud of ash. It is
formed by volcanic
explosions

A

ash cloud

18
Q

The mouth of a volcano. It
surrounds the vent.

A

crater

19
Q

An underground
passage which magma
travels through.

A

conduit

20
Q

A large underground pool
of liquid rock found
beneath the surface of the

Earth.

A

magma reservoir

21
Q

The entrance of a
volcano. It ejects lava
and volcanic ash.

A

throat

22
Q

Sources of Geothermal
Energy

A

volcanoes

23
Q

is an important material
in a volcanic activity.

A

magma

24
Q

Types of Magma

A
  1. Basaltic
  2. Andesitic
  3. Granitic
25
Q

Types of Eruption

A

●Phreatic
●Vulcanian
●Strombolian
●Pelean
●Phreatomagmatic
●Plinian

26
Q

steam produced when groundwater is heated due to underlying heat source

A

phreatic

27
Q

result from the release of large quantities of accumulated magmatic gas (cauliflower clouds)

A

vulcanian

28
Q

weak to violent eruptions characterized by lava fountains and outburst if molten lava (egg shaped)

A

strombolian

29
Q

when gas rich pasty lava accumulate to form a dome (avalanche)

A

pelean

30
Q

ejection of magmatic gases(ring shaped horizontal)

A

phreatomagmatic

31
Q

characterized by voluminous ejections of pumice and by ash flows

A

plinian

32
Q

types of volcanoes

A

cinder volcano
composite volcano
shield volcano

33
Q

when viscous lava of andesitic flows out (mayon volcano)

A

composite

34
Q

ejected lava fragments (taal volcano)

A

cinder cone

35
Q

Hazards Posed by Active Volcanoes

A

●Blasts
● Dome growth
●Gases
● Lahar flow
●Pyroclastic flow

●Pyroclastic surges
● Tephra falls
(fragments of rock)
● Tsunami

36
Q

volcanic material and hazard

A

pyroclastic flow
lava flow
ash fall/ tephra fall
lahar
volcanic gases

37
Q

fast movements of turbulents mass of fragmental volcanic materials

A

pyroclastic flow

38
Q

stream like flow incandescent

A

lava flow

39
Q

shower to fine to coarse gained volcanic materials

A

ash fall/tephra fall

40
Q

rapid flowing thick mistures of volcanic materials

A

lahar

41
Q

high temperature pf mixture of water vapor

A

volcanic gases

Science (11 decks)

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