Ocean Circulation

Which is not a type of motion for the ocean?

• Surface currents caused by wind.

• Tides causes by the gravitational pull of the moon.

• Deep water currents caused by the differences in temperature and density.

• Hurricanes caused by the low pressure areas near the equator.

Tags

NGSS.MS-ESS2-6

Cold salty water __________ and warm fresh water___________.

• floats, sinks

• sinks, stays

• sinks, floats

• none of these

Why would does Europe have a milder winter that the Midwest United States?

• Europe has a warm water current that passes near the coast.

• Midwest has the jet stream that moves back and forth.

• Europe has a cold water current that passes near the coast.

• Europe has a late winter warm front that pushes through the cold air mass.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

If left to itself, the bottom layer of the ocean

• stays warm.

• is oxygen rich.

• stays low in nutrients.

• is nutrient rich.

Tags

NGSS.MS-LS2-1

What are two things that drive the global conveyor belt?

• salinity and temperature

• temperature and tides

• the moon and salinity

• temperature and the moon

Tags

NGSS.MS-ESS2-6

The large, circular surface-current pattern found in each ocean.

• California Current

• Surface Current

• Gyre

• Global Conveyor Belt

Tags

NGSS.MS-ESS2-6

______ causes deep ocean currents

• The Coriolis Effect

• gravity

• wind

• density differences

Tags

NGSS.MS-ESS2-6

______ causes surface currents.

• The Coriolis Effect

• gravity

• density differences

• wind

Tags

NGSS.MS-ESS2-6

At the poles, the oceans get colder.  Freshwater is removed from the ocean as icebergs form.  This leaves behind the salt.   This process _______ the density of the ocean water.  

• increases

• decreases

_______ causes the Coriolis Effect

• Earth's rotation

• gravity

• wind

• density

Tags

NGSS.MS-ESS2-6