Salinity and Density

Higher salinity water means

• higher density

• lower density

• the same density

Which of the following is NOT true about density?

• Water that is higher in density sinks

• Water that is higher in salinity sinks

• Water that is lower in temperature floats

• Water that is higher in temperature floats

What affects the density of water? (Select all that apply)

• Salinity

• Nitrate

• Temperature

• Dissolved Oxygen

Tags

NGSS.MS-PS3-4

Halocline

• vertical zone in the oceanic water column in which salinity changes rapidly with depth

• vertical zone in the oceanic water column in which temperature changes rapidly with depth

• vertical zone in the oceanic water column in which density changes rapidly with depth

• vertical zone in the oceanic water column in which oxygen changes rapidly with depth

Thermocline

• vertical zone in the oceanic water column in which salinity changes rapidly with depth

• vertical zone in the oceanic water column in which temperature changes rapidly with depth

• vertical zone in the oceanic water column in which density changes rapidly with depth

• vertical zone in the oceanic water column in which oxygen changes rapidly with depth

Where is cold deep ocean water formed?

• North Atlantic Ocean

• South Atlantic Ocean

• Equatorial Ocean

• North Pacific Ocean

Tags

NGSS.MS-ESS2-6

When water freezes at the poles, what is left behind?

• High salinity brine

• Low salinity water

• High temperature water

• Cold fresh water

What makes thermohaline ocean circulation so important?

• It transports heat

• It moves water in the ocean

• It transports nutrients globally

• All of these are true

Tags

NGSS.MS-ESS2-6

______ causes deep ocean currents

• The Coriolis Effect

• gravity

• wind

• density differences

Decreasing ocean temperature causes the density of the water to ______.

• decrease

• increase

• stay the same

• fluctuate

Tags

NGSS.MS-ESS2-6