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10th grade earth and rocks

10th grade (Year 11 in England) · 16 questions · Common Core: NGSS.HS-ESS2-3, NGSS.SEP 7 · England: GCSE Physics: Waves (seismic waves, Physics only)

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Score/ 16

  1. Question 1

    Inside the Earth: which statement is NOT true?

    • A. The mantle is mostly liquid magma.
    • B. Earth's inner core is solid and the outer core is liquid.
    • C. Studying seismic waves lets scientists "see" inside Earth.
    • D. S waves can only travel through solids.

  2. Question 2

    Which seismic waves arrive first at a seismometer?

    • A. surface waves
    • B. S waves (secondary, transverse)
    • C. all arrive together
    • D. P waves (primary, longitudinal)

  3. Question 3

    At a seismometer, the S waves arrive 60 s after the P waves. Assume P waves travel at 8 km/s and S waves at 4 km/s. How far away was the earthquake, in km?

    Answerkm

  4. Question 4

    Inside the Earth: which statement is NOT true?

    • A. S waves can only travel through solids.
    • B. P waves can travel through solids and liquids.
    • C. Scientists have drilled through the crust into the mantle to see the core.
    • D. Earth's inner core is solid and the outer core is liquid.

  5. Question 5

    S waves are not detected on the opposite side of Earth from an earthquake. What does this show?

    • A. The crust is liquid
    • B. S waves are faster than P waves
    • C. Part of the core is liquid, because S waves cannot travel through liquids
    • D. The core is hollow

  6. Question 6

    At a seismometer, the S waves arrive 20 s after the P waves. Assume P waves travel at 8 km/s and S waves at 4 km/s. How far away was the earthquake, in km?

    Answerkm

  7. Question 7

    Inside the Earth: which statement is NOT true?

    • A. The mantle is mostly liquid magma.
    • B. S waves can only travel through solids.
    • C. Studying seismic waves lets scientists "see" inside Earth.
    • D. Earth's inner core is solid and the outer core is liquid.

  8. Question 8

    Why do seismic waves travel in curved paths through the mantle?

    • A. They bounce off the surface
    • B. Their speed changes gradually with depth, so they refract
    • C. Earth's gravity bends them
    • D. The Moon pulls them

  9. Question 9

    At a seismometer, the S waves arrive 5 s after the P waves. Assume P waves travel at 8 km/s and S waves at 4 km/s. How far away was the earthquake, in km?

    Answerkm

  10. Question 10

    Inside the Earth: which statement is NOT true?

    • A. Studying seismic waves lets scientists "see" inside Earth.
    • B. S waves are longitudinal.
    • C. S waves can only travel through solids.
    • D. Earth's inner core is solid and the outer core is liquid.

  11. Question 11

    S waves are not detected on the opposite side of Earth from an earthquake. What does this show?

    • A. The crust is liquid
    • B. The core is hollow
    • C. Part of the core is liquid, because S waves cannot travel through liquids
    • D. S waves are faster than P waves

  12. Question 12

    At a seismometer, the S waves arrive 20 s after the P waves. Assume P waves travel at 8 km/s and S waves at 4 km/s. How far away was the earthquake, in km?

    Answerkm

  13. Question 13

    Inside the Earth: which statement is NOT true?

    • A. Scientists have drilled through the crust into the mantle to see the core.
    • B. Earth's inner core is solid and the outer core is liquid.
    • C. P waves can travel through solids and liquids.
    • D. Studying seismic waves lets scientists "see" inside Earth.

  14. Question 14

    Why do seismic waves travel in curved paths through the mantle?

    • A. The Moon pulls them
    • B. They bounce off the surface
    • C. Their speed changes gradually with depth, so they refract
    • D. Earth's gravity bends them

  15. Question 15

    At a seismometer, the S waves arrive 10 s after the P waves. Assume P waves travel at 8 km/s and S waves at 4 km/s. How far away was the earthquake, in km?

    Answerkm

  16. Question 16

    Inside the Earth: which statement is NOT true?

    • A. P waves can travel through solids and liquids.
    • B. S waves can only travel through solids.
    • C. Scientists have drilled through the crust into the mantle to see the core.
    • D. Studying seismic waves lets scientists "see" inside Earth.

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Answer key: 10th grade earth and rocks

  1. 1. A. The mantle is mostly liquid magma.

  2. 2. D. P waves (primary, longitudinal)

  3. 3. 480 km

  4. 4. C. Scientists have drilled through the crust into the mantle to see the core.

  5. 5. C. Part of the core is liquid, because S waves cannot travel through liquids

  6. 6. 160 km

  7. 7. A. The mantle is mostly liquid magma.

  8. 8. B. Their speed changes gradually with depth, so they refract

  9. 9. 40 km

  10. 10. B. S waves are longitudinal.

  11. 11. C. Part of the core is liquid, because S waves cannot travel through liquids

  12. 12. 160 km

  13. 13. A. Scientists have drilled through the crust into the mantle to see the core.

  14. 14. C. Their speed changes gradually with depth, so they refract

  15. 15. 80 km

  16. 16. C. Scientists have drilled through the crust into the mantle to see the core.