Science

8th

grade

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Avoiding Earthquake Surprises in the Pacific Northwest

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10 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    Where is Cascadia located?

    in Alaska

    in Chile

    in the Pacific Northwest

    in the middle of the Pacific Ocean

  • 2. Multiple Choice
    30 seconds
    1 pt

    What is the cause of earthquakes?

    the sudden breaking of the earth’s rigid outer shell

    the stretching and thinning of the rocks that make up a tectonic plate

    the very slow movement of tectonic plates that are separating from each other

    the energy released when two tectonic plates grind together and then suddenly move

  • 3. Multiple Choice
    30 seconds
    1 pt

    What evidence led scientists to conclude that Cascadia had been hit by large earthquakes many times in the past?

    the knowledge that the earth’s outer shell is made up of tectonic plates

    the remains of forests in Cascadia that had died because of flooding

    the fact that Alaska had been hit by an earthquake of magnitude 9.2

    the revision of the Uniform Building Code in the Pacific Northwest

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