Science

9th -

12thgrade

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unit 7 review

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26 questions

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  • 1. Multiple Choice
    5 minutes
    1 pt

    What are the inferred pressure and interior temperature at the boundary between Earth's outer core and inner core?

    3.1 million atmospheres pressure and an interior temperature of 6300°C

    3.1 million atmospheres pressure and an interior temperature of 6700°C

    3.6 million atmospheres pressure and an interior temperature of 6300°C

    3.6 million atmospheres pressure and an interior temperature of 6700°C

  • 2. Multiple Choice
    5 minutes
    1 pt

    The magnitude of an earthquake is a number that represents the

    arrival time of the first P-wave

    difference in arrival times between P- and S -waves

    distance to the epicenter

    energy released by an earthquake

  • 3. Multiple Choice
    5 minutes
    1 pt
    Image

    Base your answer to the following question on the diagram below and on your knowledge of Earth science. The diagram represents a cut-away view of Earth's interior and the paths of some of the seismic waves produced by an earthquake that originated below Earth's surface. Points A, B, and C represent seismic stations on Earth's surface. Point D represents a location at the boundary between the core and the mantle. Seismic station A is 5000 kilometers from the epicenter. What is the difference between the arrival time of the first P-wave and the arrival time of the first S-wave recorded at this station?

    2 minutes 20 seconds

    6 minutes 40 seconds

    8 minutes 20 seconds

    15 minutes 00 second

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