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Oceans And Currents

Test Description: Motion in the ocean

Instructions: Answer all questions to get your test result.

1) What causes surface currents?

ASwimming fish BSalinity differences CWind DDensity differences

2) How many years does it take water to go through the Great Ocean conveyor belt?

A10000 B1000 C100 D10

3) In what direction does the Gulf Stream circulate?

AClockwise BRandom CUp and down DCounterclockwise

4) How does upwelling help the ocean?

ABrings oxygen up from the bottom BBrings nutrients down from the surface CBrings oxygen down from the surface DBrings nutrients up from the bottom

5) What is the deepest place in the Pacific ocean?

ADead sea BMariana trench CPeru trench DGrand canyon

6) This is how currents move in the southern hemisphere

ARandom BUp and down CClockwise DCounterclockwise

7) This uses sound waves to map the ocean floor?

Asoundings BGPS Cradar Dsonar

8) Which three things are transported by the Great Ocean Conveyor Belt?

AOxygen, nutrients, heat BHeat, oxygen, ships COxygen, nutrients, wind DNutrients, heat, salt

9) How does downwelling help the ocean?

ABrings nutrients up from the bottom BBrings oxygen down from the surface CBrings oxygen up from the bottom DBrings nutrients down from the surface

10) Thermohaline currents are created by differences in

Asunlight and pressure Bwindspeed and salinity Csalinity and temperature Dtemperature and sunlight

11) This sea floor feature was once above water during the ice age

Atrench Bcontinental shelf Cmid ocean ridge Dcontinental slope

12) How is Iceland affected by the gulf stream

AIt gives Iceland a warmer climate than it should have BIt does not affect Iceland CIt gives Iceland its cold, icy climate DIt causes Icelands volcanic activity

13) This new technology gives a high definition map of the sea floor

AGPS sattelites Bsonar Cradar DMRI mapping

14) Pressure and salinity both do this as you go down in depth in the ocean

AStay the same BIncrease CDecrease DGo up and down

15) These two oceans are growing

AAtlantic and Indian BIndian and Pacific CAtlantic and Arctic DPacific and Atlantic

16) The oceans are saltiest in the

ATropics BTemperate zones CNorth Pacific DPolar regions

17) The place where the temperature drops rapidly is called the

AHeatcline BThermocline CHalocline DHeliocline

18) The place where the salinity drops rapidly is called the

AHeliocline BHalocline CThermocline DAutocline

19) Who first mapped the Gulf Stream

AJaque Cousteau BGeorge Washington CThomas Jefferson DBen Franklin

*select an answer for all questions

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