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Eighth Grade (Grade 8) Volcanoes Questions

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Grade 8 Volcanoes
How are volcanoes formed?
  1. magma pushes up through Earth's crust
  2. shock waves from movements in Earth's crust
  3. spin of Earth
  4. L-waves traveling through Earth
Grade 8 Volcanoes
What two things largely help determine the classification of volcanoes?
  1. shape and size
  2. shape and color
  3. shape and composition
  4. shape and texture
Grade 8 Volcanoes
A newly created volcano is a good example of a                   .
  1. secondary landform
  2. primary landform
  3. special landform
  4. biome
Grade 8 Volcanoes
Where do most volcanoes occur?
  1. divergent boundary
  2. transform boundary
  3. convergent boundary
Grade 8 Volcanoes
What is expelled from volcanoes?
  1. lava
  2. ash
  3. rocks
  4. all the above
Grade 8 Volcanoes
Active volcanoes are most likely to form at
  1. transform fault boundaries.
  2. divergent boundaries.
  3. the center of continents.
  4. convergent oceanic–continental boundaries.
Grade 8 Volcanoes
What is the most deadly, immediate hazard as soon as a volcano erupts?
  1. Pyroclastic flow
  2. Lava
  3. Volcanic bombs
  4. Ash cloud
Grade 8 Volcanoes
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
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