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Volcanoes (Grade 6)

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Volcanoes

1. 
Which type of volcano is relatively small and formed by moderate to explosive eruptions?
  1. shield
  2. caldera
  3. hot spot
  4. cinder cone
 
2. 
This large volcano seems to be layered, signifying that different types of lava flows have occurred in the past, but the volcano is presently inactive.
  1. Active Shield Volcano
  2. Extinct Shield Volcano
  3. Active Cinder Cone Volcano
  4. Dormant Composite Cone Volcano
3. 
It is probably the most violent eruption. It produces an avalanche of red-hot dust and gases. What is it called?
  1. Hawaiian eruption
  2. Strombolian eruption
  3. Vulcanian eruption
  4. Pelean eruption
 
4. 
Which of the following describes shield volcanoes?
  1. smallest type of volcano, steep sides
  2. lava blows out of the vent
  3. alternating layers of lava and ash
  4. largest type of volcano, sloping sides
5. 
Mt. Kilauea in Hawaii would be classified as which type of volcano?
  1. shield volcano
  2. cinder cone
  3. composite volcano
  4. super volcano
 
6. 
What do you call a fast moving current of hot gas and rock moving away from a volcano?
  1. pyroclastic flow
  2. tephra
  3. focus
  4. tsunamis
7. 
The powder-like substance that comes out of a volcano is also known as
  1. ash
  2. lava
  3. pumice
  4. explosion
 
8. 
The mud, debris, and melted ice that travel down a mountain side after a volcanic eruption is called a
  1. lahar
  2. pyroclastic flow
  3. ash
  4. magma
9. 
What type of lava tends to trap water vapor and other gases and can become explosive?
  1. lava high in iron or magnesium
  2. lava that is silica-rich
  3. pyroclastic
  4. basalt
 
10. 
Lava that cools quickly forms                       rocks.
  1. extrusive metamorphic
  2. extrusive igneous
  3. intrusive metamorphic
  4. intrusive igneous
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