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Tsunami

Multiple Choice Quiz



1

The largest wave during a tsunami event is __________________.
A)the first
B)the third
C)the fifth
D)unpredictable, it could be any of them
E)none, the are all about the same size
2

The destructive powers of tsunami result mainly from their ___________________.
A)incredible height
B)unpredictablility
C)cold water
D)momentum and long wavelength
E)none of these
3

In the open ocean, tsunami can travel ________ miles per hour with periods up to _________ minutes.
A)50; 20
B)50; 60
C)485; 20
D)485; 60
E)670; 60
4

Which event produces the biggest tsunami?
A)Earthquake
B)Underwater landslides
C)Hurricanes
D)Impacts of asteroids and comets
E)Volcanoes
5

Powerful tsunami are most frequently produced by _________.
A)volcanoes
B)underwater landslides
C)Earthquakes
D)impacts of asteroids
E)storms
6

The Pacific Ocean has an average depth of about 5,500 meters, which yields a theoretical deep-ocean tsunami velocity of about _________ meters per second.
A)2
B)23
C)230
D)2300
E)23,000
7

Tsunami are deadly natural hazards that commonly are generated by _________________.
A)fault motion with vertical offset under the sea during which there is vertical offset
B)fault movements on land during which there is vertical offset
C)tides produced by gravitational attraction between the Earth and the Moon
D)hurricanes
E)fault movements on land in which there is horizontal offset only
8

In which of the following scenarios would tsunami tend to have the greatest destructive power?
A)A section of a linear coastline where the bottom of the ocean dips gently near the coast.
B)A section of a linear coastline where the bottom of the ocean dips steeply near the coast.
C)A section of a coastline where there is a harbor and the bottom of the ocean bottom dips gently.
D)A section of a coastline where there is a harbor and the bottom of the ocean bottom dips steeply.
E)Tsunami would have the same destructive power in all of the conditions listed above.
9

An event similar to a tsunami that can occur in lakes due to avalanches, earthquakes, and other mechanisms is called a ____________________.
A)seiche
B)splash
C)slosh
D)tidal wave
E)flood
10

A tsunamic event can begin with a drawdown or retreat if the ____________________ of the wave arrives first.
A)Responses:
B)Top
C)Right Side
D)Left Side
E)Trough