Oceans

The density of ocean water is determined by 2 factors; they are

• salt and temperature

• temperature and latitude

• pH level and salt

• temperature and ocean basin

Approximately what percentage of Earth's surface is covered by oceans?

• 40%
• 50%
• 60%
• 70%

Tags

NGSS.MS-ESS2-4

Which ocean basin is the largest?

• the Atlantic
• the Indian
• the Pacific
• the Arctic

Tags

NGSS.MS-ESS2-3

NGSS.MS-ESS2-6

The use of sound waves to determine  the depth of the ocean is called...

• submarine sounding
• sonar
• satellite altimetry
• submersible sounding

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The most abundant salt in seawater is

• calcium chloride

• magnesium chloride

• potassium chloride

• sodium chloride

Which process does NOT lead to a decrease in the salinity of water?

• runoff from land
• precipitation
• sea ice melting
• evaporation

Which term refers to a rapid change of temperature with increasing depth of the ocean?

• pycnocline
• thermocline
• abyssalocline
• isothermal cline

Tags

NGSS.MS-ESS2-6

An ocean current moving from the equator toward a pole is

• cold
• warm
• cold in the Northern Hemisphere and warm in the South Hemisphere
• warm in the Northern Hemisphere and cold in the Southern Hemisphere

Tags

NGSS.MS-ESS2-6

Which term describe the rising of cold water from deeper layers to replace warmer surface water?

• density current
• down welling
• surface current
• upwelling

Tags

NGSS.MS-ESS2-4

The five huge circular-moving systems of ocean surface currents are called

• density currents
• fetches
• drifts
• gyres

Tags

NGSS.MS-ESS2-6