1. Estuaries …91

2. Add to page 91…
Estuaries
Estuary: an area where fresh water from a river mixes with salt water from the ocean.
**1**
Coastal Ocean
Estuary
River
A typical estuary has most of the freshwater entering at its head, and has a transitional section between the body and the coastal ocean.
It is a common practice to classify estuaries into different categories, using varying schemes (based on their geomorphology or circulation) for the purposes of enabling us to study, qualitatively, common properties across multiple geographic locations. Subtleties of the terrestrial inputs and unique circulations affected by complicated coastline and bathymetry conspires to make most estuaries more unique than alike. But we can understand common physical dynamical processes that estuaries have in common…

3. Filtering System Estuaries clean our dirty rivers!
Sediment and Pollutants
Some estuaries are actually salt marshes.
These plants and mud take up some of the sediments and pollutants!

4. Chesapeake Bay very fresh quite salty
Chesapeake – a really big estuary
quite salty

5. Protective Environment
Why are estuaries called “nurseries”?…
Eggs and small fish are safe from ocean predators
The waters are calmer and more nutrient rich

6. Resting and Breeding Ground
Birds use for resting and feeding
Lots to eat
Crabs, worms, clams, and more live in the muddy areas.

7. Estuary Keeper Activity
You will work in groups of 4. Each person in the group gets a bowl with 10 goldfish.
A bowl full of extra goldfish will be in the middle of your group. Use this bowl to get the extra fish when you have to draw them based on what your card instructs.
Goldfish that are “lost” are to be placed in a cup.
There is a set of ecological cards and each person will take turns drawing from the card file and following the directions on the card. When all the cards have been drawn, the game is over.

8. Put “lost” fish in here, not back into the communal bowl
Add 10 fish to your bowl.

10. Fresh water
Salt and Fresh water
Salt water

11. 4.23.2018 Warm Up – read the handout on your desk about DHMO
Describe the characteristics of DHMO?
List 3 dangers of DHMO.
What are 2 symptoms of accidental overdose of DHMO?
Read about the uses of DHMO…do you think you ever come in contact with DHMO? Where?
Open your notebook to the back of page 88.