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Earth Science Section 18.3 Volcanic Activity Flashcards | StudBud
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Earth Science Section 18.3 Volcanic Activity
Earth Science Section 18.3 Volcanic Activity
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Volcanic Activity and Magma
Flashcards
40 cards
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Practice quiz
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Host live
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Questions
40
Answers
1
How long would the effects of an eruption at Yellowstone take to be felt globally?
couple of weeks
couple of months
couple of days
2
What is the Hawaiian Islands formed over?
Magma
Oceanic plates
Continental plates
Pacific plates
3
Magma that is the least explosive with low gas and silica content is
Andesitic
rhyolitic
Dangerous
Basaltic
4
What forms when the side of the volcano collapses into the magma chamber?
A Hot Spot
A Large depression
Fragments
Calderas
5
What would be the effect on Michigan if Yellowstone's volcano erupts?
None
only the climate change felt globally
ash accumulation
6
Cinder-Cone Volcanoes are ________ than Composite Volcanoes
Smaller
Larger
7
Mount Saint Helens in Washington shows the typical profile of what?
A Composite Volcano
A Shield Volcano
A Crater
A Cinder-Cone Volcano
8
What is a Pyroclastic flow?
None of the above
Volcanic material that does not move
Slow moving volcanic material
Rapidly moving volcanic material
9
Higher viscosity in magma results in
Fast moving magma
more explosive magma
less explosive magma
10
The largest form of volcanic tephra is
volcanic blocks
volcanic lapilli
volcanic ash
11
Most of the Rift Volcanism in the world occur at what?
Divergent Boundaries
Convergent Boundaries
Subduction Zones
Transform Boundaries
12
an intrusive igneous rock body that is mushroom shaped.
Dike
sill
Laccolith
Batholith
13
The Mauna Loa volcano in Hawaii shows the typical profile of what?
A Cinder-Cone Volcano
A Shield Volcano
A Composite Volcano
A Crater
14
When temperature decreases, viscosity
Increases
None of the above
Does not change
Decreases
15
What type of volcano is the most explosive?
A Composite Volcano
A Hot Spot
A Cinder-Cone Volcano
A Shield Volcano
16
Pressure decreases with depth below Earth’s Surface
True
False
17
How is a Cinder-cone volcano formed?
Layers of lava accumulate during nonexplosive eruptions
Materials are thrown in the air and land on top of the vent
Layers of volcanic fragments and lava forms the outside
Lava erupts through an opening
18
In the anatomy of a volcano, what is a vent?
A hole in the ocean floor
A large depression
Where lava erupts through a closed crust
Where lava erupts through an opened crust
19
an intrusive igneous rock body that runs parallel to layers of rock
Laccolith
sill
Batholith
Dike
20
A crater is a bowl-shaped depression at the top of a volcano
True
False
21
Magma is a mixture of molten rock, suspended minerals, and gases
False
True
22
What is a Hot Spot?
The Area surrounding a Hot Spring
An area where heat rises from deep in the Earth
Wifi on your phone
A geyser near a volcano
23
The smallest form of volcanic tephra is
volcanic ash
volcanic lapilli
volcanic blocks
24
Magma that is the most explosive with very large gas content is
rhyolitic
Basaltic
Andesitic
Dangerous
25
Choose the correct definition of Tephra
Rock fragments thrown in the air during a volcanic eruption
A cloud of volcanic gas
The rising temperature at the center of the volcano
The streamlined volcanic bombs that spews out
26
How does volcanic ash affect the human body?
It burns the skin
it can blind you
It forms a cement in your lungs
27
What are Earth’s major volcanic belts?
Atlantic belt
The Mediterranean Belt
The Circum-Pacific Belt
Pacific Belt
28
an intrusive igneous rock body that is irregularly shaped and very large.
Batholith
sill
Dike
Laccolith
29
What type of eruption is predicted in Yellowstone?
Volcanian
Super eruption
Hawaiian
Plinian
30
Once magma reaches the Earth’s surface it’s called
Pyroclastic Flow
Lapilli
Calderas
Lava
31
this volcano shows the typical profile of what?
A Shield Volcano
A Crater
A Composite Volcano
A Cinder-Cone Volcano
32
Magma that is slightly explosive with high gas and silica content is
Andesitic
rhyolitic
Basaltic
Dangerous
33
Magma forms when rocks begin to melt
False
True
34
The higher the silica content in lava, the higher the viscosity
True
False
35
The very large volcanic depression at Yellowstone is called a
vent
crater
caldera
36
an intrusive igneous rock body that cuts accross layers of rock
Batholith
Dike
sill
Laccolith
37
A pyroclastic flow is a cloud of volcanic gas, dust and tephra
True
False
38
Which of the following are the characteristics of a Shield volcano?
A incredibly steep mountain shape
None of these
A small cinder cone shape
A mountain with gently sloping sides with a circular base
39
What are the three different types of volcanos?
Composite volcano, Oceanic volcano, Shield volcano
Shield volcano, Cinder-cone volcano, Composite volcano
Cratered volcano, Cinder-cone volcano, Shield volcano
Shield volcano, Cinder-cone volcano, Compressed volcano
40
Where do most Volcanoes Form?
At hot spots
In the middle of large land masses
In centered oceanic plates
At plate boundaries
