Unit 2 Estuaries

What is an Estuary?

• A type of forest

• A body of water where freshwater meets saltwater

• A mountain range

• A desert

Why are estuaries important?

• They provide habitat for many species.

• They are not important.

• They are only found in tropical regions.

• They are man-made structures.

Euryhaline organisms are capable of surviving in:

• Only freshwater

• Only saltwater

• Both freshwater and saltwater

• Neither freshwater nor saltwater

What does the pH scale measure?

• Acidity or alkalinity of a solution

• Temperature of a solution

• Density of a solution

• Viscosity of a solution

Anything below a pH 7 is considered what?

• Acidic

• Neutral

• Basic

• Alkaline

Anything above a pH 7 is considered what?

• Acidic

• Neutral

• Basic

• Salty

How can the salinity change in oceans?

• Evaporation increases salinity

• Rainfall decreases salinity

• River inflow decreases salinity

• Ice formation increases salinity

How can water be added to oceans?

• Through rainfall

• By rivers flowing into the ocean

• By melting glaciers

• All of the above

How can water be removed from oceans?

• Evaporation

• Condensation

• Precipitation

• Sublimation

What happens to the salinity when there is a drought in Mobile Bay or northern Alabama?

• Salinity increases

• Salinity decreases

• Salinity remains the same

• Salinity fluctuates unpredictably