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25
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Why is pyroclastic flow dangerous?
It is a rapidly moving cloud of tephra mixed with hot, suffocating gases.
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15
×
Which is the smaller tephra? blocks or ash
ash
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seesaw
Swap points!
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star
Double points!
Okay!
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shark
Other team loses 25 points!
Okay!
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thief
Give points!
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25
15
×
Which type of volcano is the most explosive?
composite volcanoes
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15
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Which label is the vent?
B
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25
×
Is aluminum a renewalbe or nonrenewable resource? Why?
nonrenewable; finite amount in Earth
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15
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What is a fissure?
long cracks in Earth's crust
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15
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Which is the larger tephra? blocks or ash
blocks
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15
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Wet minerals and rocks melt at lower temperatures than do dry minerals and rocks. T or F
T
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15
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In the most explosive type sof eruptions, lava accumulates to form a ___
composite volcano
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boom
Lose 50 points!
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magnet
Take 10 points!
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gift
Win 20 points!
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thief
Give points!
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20
25
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seesaw
Swap points!
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magnet
Take 20 points!
Okay!
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fairy
Take points!
5
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25
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lifesaver
Give 20 points!
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25
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Give an example of sustainable yield.
If you cut down a tree to use for energy, shelter or products; you will replant it. If you eat a chicken you will raise another to replace it.
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15
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What forms when a magma chamber collapses?
caldera
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15
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What is a vent?
It is where lava erupts through an opening in Earth's crust
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15
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cinder-cone volcanoes have steep ---- and are ------ volcanoes
sides; smallest
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