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| to assume based on prior knowledge |
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| An area where all water drains into one body of water. |
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| Rain that hits the ground but doesn't sink in right away. |
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| sediment/dirt is moved by wind or water |
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| A body of water where fresh and salt water meet. |
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| A body of water that empties into a larger body of water. |
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| A man-made pond that holds rainwater. |
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| Purposes of a retention pond |
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Definition
Traps sediment
Traps storm water and let's it sink into the ground
Prevents storm water from eroding nearby streams |
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| One use of a retention pond is to prevent water from eroding nearby streams. |
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| Water can pass through an impervious surface. |
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| Run-off and surface water are the same thing |
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| The nation's largest estuary. |
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| 2 theories about the formation of the bay |
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Definition
1.Meteorite hit the lower bay
2.Melting glaciers flooded the Susquehanna River Valley |
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| Explored the bay in the early 1600s. |
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| Chesapeake Bay watershed size |
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Definition
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| Chesapeake Bay watershed boundaries |
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Definition
| New York, Pennsylvania, Maryland, West Virginia, Virginia, Delaware and Washington D.C |
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| A mix of fresh and salt water |
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Definition
| Brackish water(in estuaries) |
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Definition
| Pollution source is easy to see. |
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| Non-point source pollution |
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Definition
| Pollution source is hard to see. |
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| Examples of point source pollution |
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Definition
| Smokestacks and pipes from industrial plants. |
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| Point source pollution easy to regulate. |
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Definition
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| Examples of non-point source pollution |
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| fertilizers, pesticides, oil, trash and nutrients |
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| Non- point source pollution is easy to regulate. |
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| acid rain, fertilizers, garbage, sediment |
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| water droplets that combine with chemicals |
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| allows too much algae to grow |
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| smothers fish eggs and oyster beds |
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| the cloudiness of the water |
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| functions of a marsh/wetland |
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Definition
provides food
provides habitat
filters water
prevents flooding |
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| How does a marsh filter water? |
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Definition
| The plants trap pollutants and garbage so that it doesn't go into the bay. |
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| How does a marsh minimize erosion? |
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Definition
| Slow the waves that would otherwise pound the shore. |
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| What does a wetland provide for migratory birds? |
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Definition
| Food and a place to rest. |
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Definition
| amount of salt in a given amount of water |
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| How do you measure salinity? |
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Definition
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| What is the range of salinity in the Chesapeake Bay? |
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Definition
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| What are the three factors that effect salinity? |
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Definition
depth of water
time of year
location |
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| Where are the lowest salinity levels in the Chesapeake Bay? |
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Definition
| In the upper bay and near the surface of the water. |
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| What do the salinity levels determine about organisms? |
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Definition
| They determine where the organisms live. |
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| What time of the year is the bay the freshest? |
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Definition
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| Is saltwater heavier than freshwater? |
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