Crash Course How Do Oceans Circulate

What is one reason that ocean currents can't go directly from the equator to the poles?

• salinity

• temperature

• Coriolis effect

• too far

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NGSS.MS-ESS2-6

What action can cause an increase in density that would have an effect on deep ocean currents?

• evaporation causing an increase in salinity

• warmer ocean currents causing a decrease in density

• warmer ocean currents causing an increase in density

• a river adding freshwater to the nearby ocean water

Tags

NGSS.MS-ESS2-6

The huge circular surface currents that occur in each of the world's oceans.

• Coriolis effect

• deep ocean currents

• gyres

• density

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NGSS.MS-ESS2-6

What is the general direction of circular ocean currents in the Northern Hemisphere and the Southern Hemisphere?

• counter clockwise and clockwise

• clockwise and counter clockwise

• left and right

• North and South

Tags

NGSS.MS-ESS2-6

What is the main difference between warm and cold water?

• They are different color

• There are no differencs

• They have different densities

• Cold water rises and warm water sinks

What factor(s) have an influence on the way that ocean surface currents move?

• continental deflection

• wind

• the Coriolis effect

• all of the above

Tags

NGSS.MS-ESS2-6

What role does heat play in the formation of convection currents?

• When water loses heat, it becomes denser and sinks.

• When water gains heat, it becomes denser and sinks.

• When water loses heat to cooler water, the cooler water becomes denser and sinks.

• When water gains heat, it dissolves more solids and gases, becomes denser, and sinks

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which sequence shows the chain of energy transfers that create surface currents on the ocean?

• tidal energy → wind energy → surface currents

• geothermal energy → wind energy → surface currents

• wind energy → solar energy → surface currents

• solar energy → wind energy → surface currents

Tags

NGSS.MS-ESS2-6

Ocean currents transfer heat to the atmosphere when:

• the air has a temperature greater than the temperature of the ocean surface.

• the ocean surface temperature is the same as the temperature of the air.

• the ocean surface temperature is greater than the temperature of the air.

• the Giants make a miraculous comeback and with this years Superbowl!

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NGSS.MS-ESS2-6

In the picture above, explain why the blue water in the jar on top is mixing with the red water in the jar below.

• the warm less dense blue water is sinking into the colder more dense red water below

• the denser cold blue water is sinking into the warmer less dense red water below

• both jars must contain water of the same temperatures

• the salinity of the water in the red jar must be greater than the salinity of the water in the blue jar

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4