Ocean Eoc

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.

Tags

NGSS.MS-ESS3-1

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

• 49

• 65

• 71

• 82

Tags

NGSS.MS-ESS2-4

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"

The two most common ions in seawater are...

• Magnesium

• Calcium

• Sodium

• Chloride

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

• moderate
• extreme

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The Coriolis Effect is caused by...

• the Sun's Gravity

• Gyres

• The Moon's Gravity

• the Earth's Rotation.

Tags

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

Tags

NGSS.MS-ESS1-1

The highest high tides and lowest low tides occur during ​ (a)   when the Sun, Moon and Earth ​ (b)  

• Spring Tides
• form a straight line.
• Neap Tides
• form a 90 degree angle.

Tags

NGSS.MS-ESS2-4

The time between high tides is...

• 6 hours and 12.5 minutes

• 12 hours and 25 minutes

• 24 hours and 50 minutes

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS2-4

Large scale surface currents are create by...

• the rotation of the Earth

• global wind patterns

• the shape of the ocean basins

• local wind patterns

Tags

NGSS.MS-ESS2-6