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chapter 8.3
Question | Answer |
---|---|
the surface currents in each ocean form circular system of currents | gyre |
a large volume of water flowing in a certain direction cam affect weather and climate | ocean current |
vertical movement of water toward the ocean"s surface | upweling |
the movement of water to the right or left that is caused by Earth's rotation | Coriolis effect |
surface currents are caused by _____ from the wind | friction |
surface currents move water ____ and extend to about 400 m below the surface | horizontally |
movement toward the ocean's surface | upwelling |
the ocean's are a major part of the ______ _____ | water cycle |
an ocean current is a large volume of water flowing in a certain direction true or false | true |
friction generated by wind on water can move to water to form surface currents true or false | true |
in each ocean the major surface currents form circular system of currents called gyre true or false | true |
the oceans are the major source of moisture for the water cycle true or false | true |
what forms gyres in each ocean | Coriolis effect |
what effects the size of the gyre | continents |
list 2 factors the affect the flow of surface currents | wind, Coriolis effect |
whats the difference between upwelling and density currents | upwelling's are vertical movement of water toward the ocean's surface and density currents are movement of water downward |
what is a gyre | a circular system of currents |
water brought to the surface from deeper water is cold and nutrients poor true or false | true |
cold water is more dense than warm water true or false | true |
salty water sinks below water the is less salty true or false | true |
density currents circulate nutrients and gas rich water through the ocean true or false | true |
what does both upwellings and density currents have in common | they both move water vertically |
what does density currents do | moves water downward |
what does upwellings do | moves water upward |
ocean currents affect weather and _____ | climate |