Tsunami Review Questions



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Tsunami - Review Questions

  1. Tsunamis can be called by the more common name of ‘tidal wave’. (TRUE, FALSE)



  1. Tsunamis are caused by each of the follow except:

    1. Earthquakes

    2. Hurricanes

    3. Volcanoes

    4. Landslides



  1. Tectonic plates are moving up to _______ inch(es) per year.

    1. two

    2. three

    3. four

    4. one



  1. The type of fault that causes the most tsunamis is called the:

    1. reverse fault

    2. normal fault

    3. slip-reverse fault

    4. slip-strike fault



  1. A magnitude 7.0 Richter scale earthquake is ______ times more powerful than a 4.0 magnitude earthquake.

    1. 3

    2. 30

    3. 300

    4. 1000



  1. As a tsunami wave approaches the coast it begins to move _______________ (faster/slower) and the height of the wave _________________ (increases/decreases).





  1. This type of fault where one plate is forced under another plate is called a…

    1. normal fault

    2. abnormal fault

    3. reverse fault

    4. slip-strike fault

  2. After a tsunami wave passes your location it is safe to return to the water. (TRUE, FALSE)



  1. Most tsunamis occur in the ____________________ Ocean.

    1. Atlantic.

    2. Indian.

    3. Pacific.

    4. Antarctic.



  1. More tsunamis occur in the ______________________ (Mediterranean Sea / Caribbean Sea) than in the _____________________ (Mediterranean Sea / Caribbean Sea).



  1. _________________ buoys help maintain and improve the capability for the early detection and real-time reporting of tsunamis.

    1. DART (Deep-ocean Assessment and Reporting of Tsunamis)

    2. TADR (Tsunami Alert and Depth Reporting)

    3. TART (Tsunami Assessment in Real Time)

    4. DATB (Data Assimilation from Tsunami Buoys)



  1. A tsunami _______________ is the highest level of tsunami alerts and are issued due to the imminent threat of a tsunami from a large undersea earthquake or following confirmation that a potentially destructive tsunami is underway.

    1. watch

    2. warning

    3. bulletin

    4. alarm



  1. If you feel a strong earthquake while at a beach you need to get on the Internet to check if a tsunami warning has been issued for your area. (TRUE, FALSE)



  1. A tsunami generated from an earthquake in Chile can arrive in Japan in about ___________ hours.

    1. 3

    2. 12

    3. 15

    4. 22



  1. Buoys that monitor tsunamis can accurately detect water level changes as small as ________ millimeter(s) at depths up to ____________ feet.

    1. 10 / 20,000

    2. 1 / 20,000

    3. 20 / 10,000

    4. 5 / 10,000



  1. Of all tsunamis produce by earthquakes, landslides and volcanoes __________ % are produced directly by earthquakes.

    1. 56

    2. 61

    3. 74

    4. 83



  1. In the open ocean, tsunami waves travel as fast as _________________.

    1. A ‘top-fuel’ dragster

    2. A jet plane

    3. As the wind in a category 5 hurricane

    4. The speed of sound



  1. Tsunamis are more likely to happen from _________________________ (shallower & larger / deeper & smaller) earthquakes than _____________________ (shallower & larger / deeper & smaller) ones.



  1. The daily tidal variation of sea-surface height is much greater by far compared to tsunamis induced height changes in the open ocean. (TRUE, FALSE)



  1. As a tsunami approaches shorelines, the wave’s period _______________ with no decrease in the eave’s energy..

    1. decreases by 20%

    2. Increases by 20%

    3. remains the same

    4. decreases by 40%



National Weather Service Southern Region JetStream – An Online School for Weather

www.srh.noaa.gov



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