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Inside Earth Chapter 3: Volcanoes Flashcards | StudBud
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Inside Earth Chapter 3: Volcanoes
Inside Earth Chapter 3: Volcanoes
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Volcanoes
Flashcards
31 cards
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Questions
31
Answers
1
Liquid magma flows upward through cracks in rock because it is...
highly magnetic.
highly fluid.
less dense than the surrounding solid material.
2
The formation of the Hawaiian Islands is one example of...
Continental drift.
Volcanoes forming over a hot spot.
Volcanoes forming along plate boundaries.
3
Which of the following helps to determine how easily magma flows?
The size of the volcano.
The amount of silica in the magma.
The number of vents on the volcano.
4
A pyroclastic flow typically occurs during a quiet eruption.
True
False
5
Magma sometimes forces its way out of the side of a volcano through a side vent.
True
False
6
Pahoehoe is...
cooler, slower-moving lava.
fast-moving, hot lava.
volcanic ash.
7
A large mass of rock that forms from cooled magma inside the crust...
pipe
batholith
volcanic neck
8
The long tube in the ground that connects the magma chamber to Earth's surface is called the...
Pipe
vent.
side vent.
9
A mass of rock formed when a large body of magma cools inside the crust is called a...
neck
lava plateau
batholith
10
When magma squeezes between rock, it forms a...
sill
neck
dike
11
Volcanic belts form along...
The boundaries of Earth's plates.
islands in the Pacific Ocean
North American mountain ranges.
12
When many layers of thin, runny lava build up a high, level area, the result is a...
cinder cone volcano.
lava plateau.
composite volcano.
13
When magma hardens in a volcano's pipe, the result will eventually be a landform called a...
sill
batholith
volcanic neck
14
An energy source that is provided by water heated by magma.
geyser
pyroclastic flow
geothermal energy
15
A major volcanic belt that circles the Pacific Ocean.
Ring of Fire
Hawaii
island arc
16
A material made of oxygen and silicon.
silica
lava
magma
17
A string of islands that can form from the collision of two oceanic plates.
Hawaii
Ring of Fire
Island Arc
18
A volcano that may erupt again at some time in the distant future is...
explosive
active
dormant
19
What provides the force that causes magma to erupt to the surface?
The density of the magma.
The silica in the magma.
Dissolved gases trapped in the magma.
20
Tall, cone-shaped mountains in which layers of lava alternate with layers of ash are called...
shield volcanoes.
cinder cone volcanoes.
composite volcanoes.
21
A dormant volcano is erupting or may erupt in the near future.
False
True
22
Before lava reaches the surface it is called...
rock
volcanic ash
magma
23
Hardened magma in a volcano's pipe that remains when softer rock around it has worn away.
volcanic neck
batholith
caldera
24
The main hazard from a quiet volcanic eruption is...
volcanic gases.
lava flows.
pyroclastic flows.
25
An eruption of ash, cinders, bombs, and gases from a volcano.
pyroclastic flow
geyser
geothermal energy
26
Slow moving, cooler lava that hardens to form rough chunks.
magma
pahoehoe
aa
27
During a quiet eruption, a lava flow may set fire to and then bury everything in its path.
True
False
28
Ash, cinders, and bombs build up ina steep pile to form a cinder cone volcano.
True
False
29
The smallest lava fragments produced by an explosive eruption.
cinders
bombs
ash
30
When ash, cinders, and bombs build up in a steep pile around a volcano's vent, the result is...
a composite volcano.
a shield volcano.
a cinder cone volcano.
31
The huge hole left by the collapse of a volcanic mountain is called a...
caldera
lava plateau
cinder cone volcano
