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Earth Science Chapter 6 Test Review Flashcards | StudBud
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Earth Science Chapter 6 Test Review
Earth Science Chapter 6 Test Review
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Volcanoes
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24 cards
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Answers
1
A ____ volcano is most likely to erupt in the near future.
extinct
dormant
viscous
active
2
Why do oceanic plates subduct when they collide with continental plates?
continental plates move more quickly than oceanic plates
continental crust is denser and thinner than oceanic crust
oceanic crust is denser and thinner than continental crust
oceanic crust is denser and thick than continental crust
3
a funnel-shaped pit
caldera
crater
shield volcano
cinder cone volcano
4
What pyroclastic material's name means "little stones"?
pahoehoe
blocky
volcanic bombs
lapilli
5
an area where volcanoes form far away from tectonic plate boundaries is called a...
hot spot
caldera
mid-ocean ridge
volcano zone
6
Runny lava probably...
has been cooled below the surface
is hotter than most lava
comes from explosive volcanoes
has a low silica content
7
A vent or fissure in the Earth's surface through which magma and gases are expelled is called...
vapor chamber
volcano
earthquake
magma chamber
8
Which type of lava flows like dripping wax?
blocky
aa
pahoehoe
pillow
9
During a nonexplosive eruption, you'd expect to see...
giant fountains of laval and rock
mountainsides caving in
clouds of ash darkening the sky
huge lava flows
10
created by a combination of explosive and nonexplosive eruptions
crater
cinder cone volcano
composite volcano
shield volcano
11
How is pyroclastic material formed?
when magma remains underground too long
when lava flows underwater
when magma explodes into the air and hardens
when lava flows calmly from a crack in Earth's crust
12
What pyroclastic material reaches the atmosphere and circles Earth for years?
lapilli
volcanic ash
pahoehoe
volcanic bombs
13
A caldera is...
a large crack in the Earth's crust that allows lava to escape
a large lake on top of a mountain
a chamber that holds molten lava beneath Earth's surface
a depression created when a magma chamber collapses
14
What does a tiltmeter measure?
changes in a volcano's slope
the intensity of earthquakes
gas ratios in a volcano
the temperature inside a volcano
15
Volcanoes mostly form at
plate boundaries
the center of continents
bodies of water
mountain ranges
16
What causes rock to melt?
temperature increases and pressure decreases
temperature decreases and pressure increases
pressure and temperature increase
pressure and temperature decrease
17
Which type of lava is cool, stiff and forms heaps of sharp chunks near the vent?
lapilli
aa
pahoehoe
blocky
18
a large, flat area covered by lava
caldera
lava plateau
crater
cinder cone
19
If there is a lot of water in magma,
an explosive eruption is more likely
no eruption will occur
then the temperature at its center is low
a nonexplosive eruption is most likely
20
a small volcano; usually erupts only for a short time
composite volcano
shield volcano
crater
cinder cone volcano
21
Viscosity refers to lava's
appearance
weight
flow
temperature
22
Magma gathers in...
magma chambers
landslides
vents
calderas
23
How can volcanic eruptions change the climate?
temperature rise beause of the heat coming from lava
scorched land creates drought conditions
volcanic eruptions do not affect climate
ash blocks sunlight causing temps to drop
24
What are the 3 main types of volcanoes?
shield, composite, and cinder cone
sheild, pahoehoe, and vented
cinder, cone, and composite
cinder cone, lapilli, and caldera
