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IBMS Unit 3 Flashcards | StudBud
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IBMS Unit 3
IBMS Unit 3
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#unit 3 #waves #tides #currents
Flashcards
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Questions
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Answers
1
Which type of wave oscillates without causing progressive forward movement?
tsunami wave
internal wave
standing wave
rogue wave
2
What is the celerity of a wave with a wavelength of 100 meters and a wave period of 20 seconds?
2000 m/s
1000 m/s
5 m/s
0.2 m/s
3
Which current is labeled with a "D" in the diagram?
Gulf Stream
Agulhas
Benguela
Canary
4
What do you call the flow of ocean water caused by changes in density due to temperature & salinity changes?
upwelling
coriolis effect
downwelling
thermohaline circulation
5
Which type of wave is caused by constructive interference and produces a wave with a much larger wave height?
Wind wave
Tsunami wave
Standing wave
Rogue wave
6
What direction do the westerlies in the southern hemisphere blow toward?
Southwest
Northwest
Southeast
Northeast
7
What is the name of the prevailing winds found from the equator to 30°S?
NE tradewinds
westerlies
polar easterlies
SE tradewinds
8
Why do sea surface temperatures increase during El Nino years?
there is slackening of tradewinds causing less upwelling
there is strengthening of tradewinds causing more upwelling
there is strengthening of tradewinds causing less upwelling
there is slackening of tradewinds causing more upwelling
9
What direction will water move when a wind blows from the SW toward the NE in the northern hemisphere?
southwest
northeast
southeast
northwest
10
The net movement of water 90° to the right of the wind direction in the northern hemisphere is called...
ekman transport
el nino
upwelling
the coriolis effect
11
Will the coastline in the diagram experience upwelling or downwelling? (in N. hemisphere)
upwelling
downwelling
12
Coastlines that experience upwelling have more phytoplankton and higher productivity because the water is warmer.
False
True
13
Which current is part of the Great Ocean Conveyor & releases warm air on the west coast of Europe?
North Atlantic Drift
Brazil
California
Gulf Stream
14
What is the steepness of a wave with a wavelength of 100 meters and a wave height of 50 meters?
1000
10
0.1
0.5
15
Which current flows from the coast of Japan toward the coast of U.S. in the North Pacific ocean?
North equatorial
California
North Pacific
Kuroshio
16
What is the current labeled with an "M" in the diagram below?
East Australia
West Australia
Kuroshio
North Equatorial
17
The Coriolis Effect results in a net movement of water 90 degrees to the right of wind movement in the North. hemisphere
True
False
18
A wave has a wavelength of 300 feet. At what depth will it become a shallow water wave?
150 feet
50 feet
100 feet
15 feet
19
What causes land breezes and sea breezes?
Land has a high heat capacity and warms up slowly
Land has low heat capacity and cools down slowly
Water has a low heat capacity and cools down quickly
Water has a high heat capacity and warms up slowly
20
True or False: Sea breezes occur at night with an offshore flow from land to sea.
True
False
21
Which of the following is true of La Nina events?
results in stormier weather in the Eastern Pacific
thermocline is shallower
Occur in Atlantic ocean
occur as often as El Nino
22
What is the name of the convection cells found from 30 to 60 degree latitudes?
Polar cells
Westerly cells
Hadley cells
Ferrel cells
23
Which current is labeled with an "A" in the diagram?
Peru
Benguela
Brazil
California
24
Deep water waves have a maximum steepness of 1/5 the ratio of wave height to wavelength.
True
False
25
What is the current labeled with a "K" in the diagram below?
Benguela
Canary
Brazil
Agulhas
