Quiz 5 review Flashcards
A Water wave has a wavelength of 20 meters, and is traveling in a region where the water depth is 5 meters. This wave is an example of…
a. a very shallow wave.
b. the question is impossible to answer without knowing the speed of the wave.
c. A wave that is somewhere between a deep water wave and a very shallow water wave (i.e., a shallow water wave).
d. A deep water wave.
c. a wave that is somewhere between a deep water wave and a very shallow water wave (i.e., a shallow water wave).
The wavelength of a certain water wave is 50 meters and it is traveling through a region of water with depth 1 mile. This wave is an example of…
a. a deep water wave.
b. a very shallow water wave
c. a wave that is somewhere between a deep water wave and a very shallow water wave (i.e., a shallow water wave).
d. it is impossible to answer the question without knowing the speed of the wave.
a. a deep water wave.
You are in an area where there are several lakes of different sizes. The wind is constant in the west-east direction. When would you expect a wind-generated wave to be the largest?
a. if we stand on the east shore of the smallest lake.
b. the longer we wait the larger the waves will be.
c. can’t tell without knowing the wind speed.
d. none of the above.
b. the longer we wait the larger the waves will be.
The wave speed of a tsunami is about _____, while that of the tides is about _____.
a. 1000 mph, 500 mph
b. 1000 mph, 3x10^(8) m/s
c. 500 mph, 1000 mph
d. None of the answers provided is correct.
c. 500 mph, 1000 mph
A water wave with wavelength 285 meters is traveling in a pond of depth 35 feet. What is the speed of this wave? In the units of your answer, use m to represent meters and s to represent seconds.
10.23 m/s
In the open ocean, the amplitude of Tsunami is…
a. typically large enough to cause massive destruction.
b. typically rather small.
c. neither of the above.
b. typically rather small
Which of the following statements are true regarding tides (choose all that apply)?
a. tides are weakest when the sun and moon are opposite sides of the earth.
b. tides are strongest when the sun, moon, and earth are all aligned.
c. tides are caused by underwater earthquakes and/or landslides.
d. we experience one high tide and one low tide everyday.
e. tides are caused by differences in gravitational pull between the different parts of the earth.
f. the effect of the sun in producing tides is greater than that of the moon because the sun pulls on the earth more strongly.
g. the effect of the moon in producing tides is greater than that of the sun because the moon is much closer to the earth than the sun.
b. tides are strongest when the sun, moon, and earth are all aligned.
e. tides are caused by a difference in gravitational pull between the different parts of the earth
g. the effect of the moon in producing tides is greater than that of the sun because the moon is much closer to the earth than is the sun.
Tsunamis are caused by …
a. the rotation of the earth.
b. the same thing that causes tides.
c. gravitational force between the moon and the earth
d. underwater earthquakes and/or landslides.
d. underwater earthquakes and/or landslides.
Waves approaching the shore over a gently sloping bottom have a wavelength of 27 meters. At a point where the depth is 5 meters, the waves begin to break. The wave height must be about (use m to represent meters in your answer)?
5 m
In the open sea, waves of wavelength 13 meters are gradually increasing in height. What is the greatest height that the waves can achieve before breaking? In the units of your answer, use m to represent meters.
1.86 m
Standing in the water near the beach, you feel the undertow. The distance from where you stand to the point at which the waves break is 4 meters. If you jump into the water, which of the following is true?
a. the undertow will pull you out to a distance approximately 4 meters.
b. the undertow may pull you out beyond a distance of 4 meters.
c. what the undertow does depends upon wether or not there are underwater obstructions such as sandbars.
d. The distance to which you are pulled by the undertow depends upon the wavelength of the waves breaking on the shore.
a. the undertow will pull you out a distance of approximately 4 meters.
A water wave has a wavelength of 10 meters and is traveling in a pond of depth 1 meter. The water at the bottom is…
a. exhibiting the same motion as the water at the surface of the pond.
b. not moving at all.
c. moving in little circles.
d. sloshing back and forth with almost no vertical motion.
d. sloshing back and forth with almost no vertical motion.
A water wave with wavelength 3 meters is traveling across a portion of a lake with depth 3 meters. The water at the bottom of the lake is…
a. moving in little circles.
b. sloshing back and forth, with almost no vertical motion.
c. not moving at all.
d. exhibiting the same motion as the water at the surface.
c. not moving at all.
