Estuaries review

Salinity in an estuary can fluctuate drastically. However, when moving UPSTREAM salinity will always ____________.

• increase

• decrease

• stay the same

Tags

NGSS.MS-ESS2-4

Here in the U.S. estuaries are nurseries to over ____ % of all fish and shellfish harvested.

• 99

• 10

• 75

• 100

Tags

NGSS.MS-LS2-4

Are salinity levels in estuaries higher or lower than the open ocean?

• Higher

• Lower

• The same

An estuary is best defined as a place where--

• fresh and salt water meet

• a river meets the Chesapeake Bay

• a group of animals are gathered

• the water from the land flows into a river

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

A mix of salt water and fresh water is called..

• mixture

• brackish

• abiotic

• biotic

Where would you find greater salinity in an estuary?

• On the surface of the water.

• Near the bottom.

• Somewhere in the middle.

• It would be the same throughout the estuary.

A salt wedge forms in an estuary because

• fresh water is more dense than seawater and sinks down.

• fresh water is less dense than seawater and sinks down.

• fresh water is more dense than seawater and floats on top.

• fresh water is less dense than seawater and floats on top.

Tags

NGSS.MS-ESS2-4

Euryhaline species are able to handle salinity levels

• that vary widely

• that vary narrowly

• that remain at an intermediate

• that are very high

In which estuary zone is the land covered during high tide and exposed during low tide?

• subtidal zone

• intertidal zone

• supratidal zone

Check off the types of Estuaries that have been created by glacials?

• Drowned River Mouth/Coastal Plain

• Fjord

• Bar-built

• Tectonic

Tags

NGSS.MS-ESS2-2