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El Nino + Tsunami
Test Description: ElNino Upwelling Downwelling Tsunamis Waves
Instructions: Answer all questions to get your test result.
1) What causes an El Nino?
A
Cold waters moving westward and strong tradewinds which increases downwelling
B
Warm waters moving eastward due to low tradewinds which blocks upwelling
C
Cold waters moving eastward due to low tradewinds which blocks upwelling
D
Warm waters moving westward and strong tradewinds which increases downwelling
2) Tsunamis are caused mainly by
A
storms
B
winds
C
tides
D
underwater plate movement
3) Where do most tsunami's occur?
A
Pacific Ocean
B
Indian Ocean
C
Atlantic Ocean
D
Southern Ocean
4) How fast can tsunami's travel?
A
6-12 mph
B
20-30 mph
C
40-50 mph
D
60-120 mph
5) What instrument can detect a tsunami?
A
Bottom sampler
B
Dart Buoy
C
Echo-sounder
D
Dredge
6) This occurs when winds blow warm water towards the shore and is less biologically productive?
A
upwelling
B
downwelling
7) What occurs during La Nina?
A
Tradewinds and upwelling increases
B
Tradewinds and upwelling decreases
C
Tradewinds decrease and downwelling occurs
D
Tradewinds increase and downwelling occurs
8) In which ocean does El Nino occur?
A
Atlantic
B
Indian
C
Pacific
D
Southern
9) During normal condtions where does upwelling normally occur in the equatorial Pacific?
A
On the northern side of the basin
B
On the southern side of the basin
C
On the western side of the basin
D
On the eastern side of the basin
10) What kind of wave is the best for board surfing?
A
spilling
B
tsunami
C
plunging
D
surging
*select an answer for all questions
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