Chat with AIExam 4: Tsunamis
The Indonesian tsunami began with an earthquake from subduction zone. Explain what each of the following people would have seen during the tsunami.
A) A person in a cruise ship in the ocean, near the subduction zone .
B) A person swimming in the ocean, but near the shoreline closest to the subduction zone.
C) A person on the land closest to the subduction zone, but a quarter mile from the shoreline.
D) A person on the land far from the subduction zone, but near the shoreline of the ocean that the tsunami travelled in.
(38) 
VerifiedA) A person in a cruise ship in the ocean, near the subduction zone - would feel nothing when the Indonesian tsunami passed (in the open ocean tsunamis are very wide and not very high).
B) A person swimming in the ocean, but near the shoreline closest to the subduction zone - would have experienced the full brunt of the ~10 m high wave (probably she/he would have been carried far inland and then swept back out to the ocean as the tsunami retreated) and probably would not have survived.
C) A person on the land closest to the subduction zone, but a quarter mile from the shoreline - would have experienced the full brunt of the ~10 m high wave (probably she/he would have been carried farther inland and then swept back out to the ocean as the tsunami retreated) and probably would not have survived.
D) A person on the land far from the subduction zone, but near the shoreline of the ocean that the tsunami travelled in - would have experienced a much smaller wave and hopefully would have survived, depending on the specific situation.
Explain how a tsunami headed for the Hawaiian Islands might be detected and the public might be warned.
(28) VerifiedA tsunami warning system for the Hawaiian Islands has three components:a network of seismographs to accurately locate and determine the depth and magnitude of submarine and coastal earthquakes, automated tidal gauges to measure unusual rises and falls of sea level, and a network of sensors connected to floating buoys. Surface buoys with a bottom sensor, known as a tsunameter, detect small changes in the pressure exerted by the increased volume of water as a tsunami passes overhead. This information is relayed by satellite to a warning center and is combined with tidal gauge information to predict tsunami arrival times.
It is possible to examine the geologic record for ancient tsunamis that were not recorded by humans.
(30) VerifiedTrue
A locked fault in a subduction zone represents a major threat for producing a large tsunami.
(48) Which of the following describes the tsunami in Japan in 2011?
(35) There is little chance of another devastating tsunami in Indonesia over the next 100 years because of the tsunami in Indonesia within the past 15 years.
(41) If you were an elected local official, how would handle reports that some of the people in your town went to the coastline to look for a tsunami when a tsunami warning was issued?
(37) Usually, there is only one wave from the tsunami and once it recedes people may return to their homes.
(26) Which is the best explanation for how earthquakes cause tsunamis?
(25) Before a tsunami arrives, sea level often drops exposing the seafloor.
(32) Is it possible to predict the arrival time of a tsunami in distant areas after a major earthquake?
(38) If you can see the tsunami coming, you could probably just wait for it and swim to safety.
(39) Which of the following is NOT an effect that can be caused by tsunamis?
(39) 
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