Today Check out a Netbook Get on omsteamraiders.pbworks.com Science page Tuesday Website worksheet on Estuaries & Cape Fear Watershed Put questions and answers in Science Notebooks I will be calling up to tell you grades and missing assignments.
A new community settles in a remote area. The citizens hold a meeting to determine the first priorities for their community… what is the most important thing to do? WHY?
Reminders Homework due Friday Missing Coach book
Estuary When fresh & salt water met How do they not continue to mix? – Freshwater sits on top of salt water
Stewardship Taking care of the Earth So we will be a good stewardship of Ms. Myers’ room From here on out we will say the word Stewardship when we clean and take care of the room
Cleaning Up the Earth Can be expensive and difficult Preventing pollution is the easiest ways to protect our Earth – Do not litter, be aware of what you are doing to the Earth,
2 types of pollution Point-source pollution Non-point source pollution
Point-source Pollution Pollution that comes from a single source Examples – Oil spolling from a supertanker into an ocean or river – Drainpipe spilling water into a river
Non-point source pollution Pollution that come from many places or an unidentified source Examples – Rain carries pollution – Fertilizers carried by runoff
Identify Next you will identify a situation as point source or non-point source
Damaged sewer pipes or systems
Chemical runoff from agricultural fields, golf courses, and lawns
Waste runoff from feedlots
Leaking underground oil tanks
Soil from farms
Release of heated water from power plants into streams
Switch partners
Release of raw sewage from wastewater treatment plants
Acid rain
Mercury pollution from coal- burning power plants
Release of chemicals from papermills into streams
Salts from irrigation of farm fields
Release of dishwasher or sewage from homes directly into streams
Sand, grit, oil, and gasoline from city and suburban streets
Answers
Damaged sewer pipes or systems Point
Chemical runoff from agricultural fields, golf courses, and lawns Non-Point
Waste runoff from feedlots Non-point
Leaking underground oil tanks point
Soil from farms Non-point
Release of heated water from power plants or factories into streams Point
Release of raw sewage from wastewater treatment plants point
Acid rain Non-point
Mercury pollution from coal- burning power plants Non-point
Release of chemicals from papermills into streams point
Salts from irrigation of farm fields Non-point
Release of dishwasher or sewage from homes directly into streams point
Sand, grit, oil, and gasoline from city and suburban streets Non-point
Pollution of Oceans Eventually flows to the ocean Your are not allowed to dump in the oceans.
Pollution of Groundwater Rain into soil (with pollution) Groundwater aquifer= Water source polluted
Estuaries Freshwater from a river meets and mixes with salt water from the ocean AKA: bays, harbors, lagoons, or sounds.
Tides Freshwater flows down Rising tides push ocean water into river – High tide, the salt water further up stream. – Low tide, saltwater is pushed farther downstream by the river water. Therefore, the SALINITY changes throughout the day as the tide rises and falls.
Organisms Can tolerate the fresh and saltwater Sea grasses and marsh grasses grow in and along the edge of the water. Grasses and other plants provide food & shelter for other organisms Fish, crab, clams, and other shellfish live well in these conditions Estuaries are nurseries for many animals, including some ocean animals that swim to estuaries to breed
Estuaries Estuaries are protected from ocean waves by land features. – Barrier islands, reeds, or sand spits.
A family living in a house needs to dig a new well before they will have usable water. Which location would be the best choice for the new well?
Water Laws The Clean Water Act was passed in – Goal: “the protection of fish, shellfish, and wildlife and recreation in and on the water. “ Pays for wastewater treatment
Water Laws The Safe Drinking Water Act – Set standards for the quality of drinking water – Test and evaluate drinking water
Other Laws U.S. Marine Protection, Research, and Sanctuaries Act – NO Dumping in water
Water Quality