Oceanography

Oceans cover more than two-thirds of Earth's surface.

• True

• False

Tags

NGSS.MS-ESS2-4

Ten percent of ocean water is fresh water.

• True

• False

Canada has the longest coastline of any country.

• True

• False

The deepest spot in the ocean is the Mariana Trench.

• True

• False

There are four oceans.

• True

• False

The average depth of the oceans is:

• 100 m

• 4 km

• 10 km

• 40 km

The three most common ions found in sea water are:

• Sodium, magnesium and sulphate

• Sodium, magnesium, and sulphate

• Chloride, magnesium, and calcium

• Chloride, sodium and sulphate

If an ocean current from the arctic met an ocean current from the equator…

• the arctic current would sink beneath the equatorial current.

• the arctic current would rise above the equatorial current.

• both currents would come to a stop.

• Not enough information.

A turbidity current is...

• a ocean surface current

• a hazy area of water

• an underwater landslide

• an underwater volcano

The thermocline...

• has rapid temperature drops

• is above the mixed layer

• is indistinct from the rest of the ocean

• sinks due to an increase in salinity