Science teset Flashcards

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1
Q

what type of rocks are volcanoes made of

A

igneous

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2
Q

The term volcano originally came from the name for what

A

Roman God

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3
Q

A_____________ is a depositional mountain built up by molsten rock that has risen to the earth’s surface through a vent

A

volcano

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4
Q

a volcano begins to form when magma forces its way to the surfac and breaks through forming a hole or what

A

vent

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5
Q

what is magma that reaches the earth’s surface

A

lava

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6
Q

The depression found at the top of most volcanic cones is called a __________

A

Crater

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7
Q

What is a crater like depression cuased by an explosion or the collapse of a volcanic cone

A

caldera

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8
Q

Where does pillow lava form

A

under water

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9
Q

Does a pyroclastic flow or glowing avalanche contain both gases and hto solid particles

A

yes

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10
Q

A mudslide caused a volcano is called a what

A

lahar

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11
Q

A ______________ is a vent in the ground through which hot gasses escape

A

fumaroles

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12
Q

Is the term tephra used to descube flowing lava that has cooled and soldfied on the ground

A

no

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13
Q

What are tiny angular galassy garments of solid lava called

A

ash

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14
Q

What is a steramlined mass o ejected lava blobs that soldified in flight called

A

bomb

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15
Q

Which of these lists is in the correct order from samllest to largest ash cinder bomb ash bomb cinder cinder ahs bomb cinder bomb ash

A

ash cinder bomb

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16
Q

Is the circum pacific volcano belt sometimes called the ring of fire

A

yes

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17
Q

Are many volcanoes found in areas of tectonic activity

A

yes

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18
Q

Which organimsa re the base or first step of the food chainaround black smokers deep within the ocean

A

bacteria

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19
Q

Flood _____ are thick layers of igneous rock covering larege portions of teh eath they are thought to have formed whn huge quantitiies of mama were realeased through cracks in the earth’s curst

A

basalts

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20
Q

What is a volcao that emits molsty lava in quiet eruptions

A

shield volcanoes

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21
Q

Can volcanoes be classifeid by age structure and activity

A

no

22
Q

what is teh name of a volco that emists lava and solid debries in alternatley quiet and explosives eruptions

A

stratovolcanoes

23
Q

Do stratovolcaoes release lava and pyroclasitc materail that form layers or strata

A

yes

24
Q

What is the name of a volcao that emits moslty cindrs, ahses, and bombs

A

cinder cones

25
Q

Which of the following is not aterm realating to the activity levle of a volcano active inert extinct or dormatn

A

inert

26
Q

What is the name of a colcao that has no historical reord of erpution and showing no seismic indications of activity deep undergoudn

A

extinct

27
Q

Which of these volcanoes is located in the state of Washington

A

Mt saint helens

28
Q

Have some volcaoes that were considered dormant erupted with disastrous reslults

A

yes

29
Q

Which of the following statements descibes a typial young earth creation gologists view of volcanoes

A

most formed druing or shorly after the flood

30
Q

The VEI of a volcnaos’s eripton is based on what

A

The amount of tephra a volcano produces, Height of teh eruption cloud, and a dieseroptive estimate of teh explosian

31
Q

Vertical is to dike as horizontal is to what

A

sills

32
Q

are sill and dikes products of intrusive volcanism

A

yes

33
Q

Did the eruption of MT. Tambora affect not just the island wher it occurered but the weateher of the entie eath for more than a year

A

yes

34
Q

Batholiths and laccoliths are both types of what

A

plutons

35
Q

does the term geothermal gradient refer to the way the temperature withing the earth decreases continouously with depth

A

no

36
Q

Unlike hot springs geysers do not precuce distinct mineral epostis

A

false

37
Q

A hydrotheraml circuit is best seen in what

A

eruption of a geyser

38
Q

Is geyser water heated by magma

A

yes

39
Q

A spring that periodically ejects large quantities of hot water and steam is known as a what

A

geyser

40
Q

The internal energy of the eart, particularly evident in areas where hot springs and getsers exist, is sometimes harnessed for a man’s use This is called____________ energy

A

geotheraml

41
Q

Has geotheraml envergy become the larggs source of electricity in the United States

A

no

42
Q

Which structure type is omposed of alternating layers of lava and cindrs

A

Stratovolcano

43
Q

Study The Diagram

A
44
Q

Channel for lava

A

neck

45
Q

Intrusions

A

sill/dikes

46
Q

side cone

A

parasitic vent

47
Q

depression

A

crater

48
Q

Layer of pyroclastic materail and ash

A

tephra

49
Q

structure

A

composite cone

50
Q

Molten rock

A

Magma chamber

51
Q

erupts lava

A

vent