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10 questions
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  • Q1

    A mountain that forms in Earth's crust when magma reaches the surface.

    volcano

    molten material

    lava

    plate tectonics

    30s
  • Q2

    A molten mixture of rock, gases, and water from the Earth's mantle

    lava

    volcano

    molten material 

    magma

    30s
  • Q3

    A major belt of volcanoes surrounding the Pacific Ocean.

    plate tectonics

    island arc

    ring of fire

    magma boundary

    30s
  • Q4

    How many types of volcanic eruptions are there?

    four

    one

    three

    two

    30s
  • Q5

    A volcano that is sleeping is considered

    extinct 

    inactive

    active

    uninteresting to scientists.

    30s
  • Q6

    The opening where molten rock and gas leaves the volcano.

    lava flow

    pipe

    crater

    vent

    30s
  • Q7

    What determines the manner in which volcanoes erupt?

    mantle

    altitude

    magma

    location

    30s
  • Q8

    As lava cools and congeal, its viscosity...

    increases

    neither increase or decrease 

    none of the above

    decreases

    30s
  • Q9

    What type of magma may produce an eruption column?

    Andesitic

    Basaltic

    Rhyolitic

    30s
  • Q10

    What's the relationship between viscosity and temperature?

    inversely proportional (increase to decrease)

    directly proportional (increase to increase)

    none

    30s

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