Oceans Review

Where is the Challenger Deep, the deepest portion of the Earth's ocean, located?

• Atlantic Ocean

• Pacific Ocean

• Arctic Ocean

• Indian Ocean

Answer explanation

The Challenger Deep is part of a submarine trench called the "Marianas Trench"

What type of currents are potentially dangerous to swimmers, because they rapidly carry water offshore quickly?

• Surface Currents

• Longshore Currents

• Deep Currents

• Rip Currents

Where does salt in the oceans come from?

• Near-shore salt deposits

• River inflow

• mid-ocean ridges

• deep-sea hydrothermal vents

Answer explanation

Remember, rivers do the work of weather in and erosion on land, and they carry many dissolved ions into the ocean. When that water evaporates from the ocean, it leaves the dissolved ions behind, leaving the oceans to be salty.

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NGSS.MS-ESS2-4

The surface of the Earth is covered by ___ % salt water.

• 49

• 65

• 71

• 82

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NGSS.MS-ESS2-4

The two most common ions in seawater are...

• Magnesium

• Calcium

• Sodium

• Chloride

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NGSS.MS-PS1-2

The yearly weather at a site on the coast is most likely more ​ (a)   than a site that is inland 100 miles.

• moderate

• extreme

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What has the strongest influence on the tides?

• The Moon's Gravity

• The Earth's Rotation

• The Sun's Gravity

• Wind

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NGSS.MS-PS2-4

The time between high tides is...

• 6 hours and 12.5 minutes

• 12 hours and 25 minutes

• 24 hours and 50 minutes

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NGSS.MS-ESS1-1

Large scale surface currents are create by...

• the rotation of the Earth

• global wind patterns

• the shape of the ocean basins

• local wind patterns

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NGSS.MS-ESS2-6

Thermohaline Circulation is caused by...

• density differences

• temperature differences

• salinity differences

Tags

NGSS.MS-ESS2-6