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Measure earthquakes and reduce their risks

7th grade (Year 8 in England) · 16 questions · Common Core: NGSS.MS-ESS3-2, NGSS.SEP 5 · England: KS3 Chemistry: Earth and atmosphere, KS3 Geography: Natural hazards

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Date

Score/ 16

  1. Question 1

    What instrument records earthquake waves?

    • A. a seismometer
    • B. a thermometer
    • C. a barometer
    • D. an anemometer

  2. Question 2

    Earthquakes: which statement is NOT true?

    • A. Undersea earthquakes can cause tsunamis.
    • B. The point on the surface above an earthquake's origin is the epicentre.
    • C. Each step up in magnitude releases about 32 times more energy.
    • D. The focus of an earthquake is always on the surface.

  3. Question 3

    On the magnitude scale, each whole number up means the ground shaking (wave amplitude) is 10 times larger. How many times larger is the shaking in a magnitude 5 earthquake than in a magnitude 3?

    Answer

  4. Question 4

    Some countries send phone alerts seconds before strong shaking arrives. How is this possible?

    • A. Radio waves are slower than seismic waves
    • B. Phones feel the earthquake first
    • C. They predict quakes days ahead
    • D. Sensors detect the faster, weaker first waves and send warnings before slower damaging waves arrive

  5. Question 5

    Earthquakes: which statement is NOT true?

    • A. The point on the surface above an earthquake's origin is the epicentre.
    • B. The focus of an earthquake is always on the surface.
    • C. Most earthquakes happen near plate boundaries.
    • D. Undersea earthquakes can cause tsunamis.

  6. Question 6

    On the magnitude scale, each whole number up means the ground shaking (wave amplitude) is 10 times larger. How many times larger is the shaking in a magnitude 4 earthquake than in a magnitude 3?

    Answer

  7. Question 7

    Which design feature helps a tall building survive an earthquake?

    • A. large glass panels with no frames
    • B. flexible base isolators that let the ground move under the building
    • C. heavy concrete on the top floors
    • D. building on loose wet sand

  8. Question 8

    Earthquakes: which statement is NOT true?

    • A. The focus of an earthquake is always on the surface.
    • B. Most earthquakes happen near plate boundaries.
    • C. Each step up in magnitude releases about 32 times more energy.
    • D. The point on the surface above an earthquake's origin is the epicentre.

  9. Question 9

    On the magnitude scale, each whole number up means the ground shaking (wave amplitude) is 10 times larger. How many times larger is the shaking in a magnitude 5 earthquake than in a magnitude 3?

    Answer

  10. Question 10

    Some countries send phone alerts seconds before strong shaking arrives. How is this possible?

    • A. Phones feel the earthquake first
    • B. They predict quakes days ahead
    • C. Sensors detect the faster, weaker first waves and send warnings before slower damaging waves arrive
    • D. Radio waves are slower than seismic waves

  11. Question 11

    Earthquakes: which statement is NOT true?

    • A. Undersea earthquakes can cause tsunamis.
    • B. Each step up in magnitude releases about 32 times more energy.
    • C. Most earthquakes happen near plate boundaries.
    • D. Earthquakes only happen in hot countries.

  12. Question 12

    On the magnitude scale, each whole number up means the ground shaking (wave amplitude) is 10 times larger. How many times larger is the shaking in a magnitude 6 earthquake than in a magnitude 3?

    Answer

  13. Question 13

    What instrument records earthquake waves?

    • A. a barometer
    • B. an anemometer
    • C. a thermometer
    • D. a seismometer

  14. Question 14

    Earthquakes: which statement is NOT true?

    • A. The point on the surface above an earthquake's origin is the epicentre.
    • B. Most earthquakes happen near plate boundaries.
    • C. Each step up in magnitude releases about 32 times more energy.
    • D. Earthquakes only happen in hot countries.

  15. Question 15

    On the magnitude scale, each whole number up means the ground shaking (wave amplitude) is 10 times larger. How many times larger is the shaking in a magnitude 8 earthquake than in a magnitude 6?

    Answer

  16. Question 16

    Why can scientists not predict the exact time of an earthquake?

    • A. Seismometers do not work
    • B. Stress builds up unpredictably along faults, so only long-term probabilities can be given
    • C. Earthquakes only happen at night
    • D. Earthquakes are random and have no causes

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  1. a seismometer
  2. The focus of an earthquake is always on the surface.
  3. 100
  4. Sensors detect the faster, weaker first waves and send warnings before slower damaging waves arrive
  5. The focus of an earthquake is always on the surface.
  6. 10
  7. flexible base isolators that let the ground move under the building
  8. The focus of an earthquake is always on the surface.
  9. 100
  10. Sensors detect the faster, weaker first waves and send warnings before slower damaging waves arrive
  11. Earthquakes only happen in hot countries.
  12. 1000
  13. a seismometer
  14. Earthquakes only happen in hot countries.
  15. 100
  16. Stress builds up unpredictably along faults, so only long-term probabilities can be given