Claire's Watershed Blog Page

We have observed how temperature affects the amount of dissolved oxygen. What trend did we see? Warm water can cause photosynthesis and how plant growth increases, carbon dioxide from the sun.

How can increased plant growth both increase and decrease dissolved oxygen in water? Plants release oxygen, but, when they all die they take all of the oxygen back. The decomposition balances places for the plants.

An ecosystem includes the organisms that live in it. How can changes in temperature in an ecosystem change the organisms that live there? To much oxygen can make the organisms grow real fast, (rapidly.) Some organisms can survive in very warm water but some other organisms can't survive in that kind of heat that the water makes. Some organisms need cold water to stay alive, but if the opposite organisms are in the opposite water they could die.

What is thermal pollution? Thermal pollution is when humans cause many changes in temperature of a body of water. Like, sewage, and fecal coliform.

How do scientists measure the quality of water using temperature? They test the temperature at its score, lake, stream, river.

Why is it important to measure the turbidity water? In turbidity water, there are more particles in this kind of water (turbidity water), these particles are holding onto the sun temperature, which is making the water murky.

What causes turbid water? Soil erosion is what caused/causes turbid water. Fecal coliform and sewage overflows make the water murky because of the waste from the sewage and the fecal coliform.

Why is fecal coliform measured to determine the health of a river? Fecal coliform is waste. If there is no fecal coliform, the clarity of the water is good because there wouldn't be any waste and raw sewage.

How do fecal coliform bacteria end up in a river? Fecal coliform gets built up and then it overflows and drops into the river.

What role do humans have in altering temperature, turbidity, and amount of fecal coliform in water? We make turbidity water by our waste we produce into the water. And our raw sewage. When it rains and when runoff happens dirt becomes loose and goes to the lowest point.

In science we are learning about how Phosphors affects the way plants ,such as Duckweed, can grow. We put liquid fertilizer in the duckweed. When we put the Phosphorus in the test tubes with the duckweed there were about 9 in one test tube, about 18 in the second test tube, about 23 in the third test tube, about 15 in the fourth test tube. The Environmental Protection Agency have estimated that the forest lands account for about sixteen percent of Phosphorus going into Lake Champlain, and that sixteen percent is very bad.

Our Procedure

The first step of the procedure was, we took the test tubes and added 20ml. of water. Step two, we added the duckweed. Step three, we counted the fronds. Step four, we put .1ml. of liquid fertilizer in each of the test tubes. Step five, we placed them (the test tubes) in the rack.
Oxygen Tests

Our whole ⅚ watched an experiment that our teachers did with Oxygen. They [the teachers] had two water samples the first sample was labeled A and the sample A was Cedar Lake water, the second sample was labeled B and the sample B was water from our fish tank. We put in Manganous Sulfate & Iodide-Azide, which caused Flocculate/Floc. Flocculate is the same thing as Floc. Floc made the water in sample A cloudy, foggy, and you could not see through it. Then we put in the Sulfamic Acid which dissolved the Floc. Then we put in Sodium Thisulfate to make the water clear we put in 10 drops till the bottom was clear. We put the same drops in, but added 6 more drops which made the whole thing clear, so 16 drops made the whole sample clear. We did the same experiment on the same sample A. The data when we did it again was 10 drops of Sodium Thisulfate got the bottom clear. 13 drops got the whole thing clear. Then we did the same experiment with sample B we had ⅞ drops of Sodium Thisulfate got the sample a litte clear then we added ¾ drops which got the whole thing clear.


I looked outside and saw that it was raining out and the water was running of my roof which is called runoff. My sources tell me that Agricultural is farm use. Water ended up in farm land where there was manure and dirt, that is a point source of polluting or pollution. I saw when it rained water pulled on the side of the road, which is making water go up when cars drive through it. Which could bring oil from the car when the water comes down of the car. When it pulled again on the road the second time it went down into the ditch it can bring ( hitch hikers ) like gum, oil, paper,which is pullotion and many other sorces of pullotion could have gone in the ditch where there is grass. My driveway has a incline so when it rained it made a very big pull.
How water and land interact

My class has been learning about How does water quality affect the ecology of a community? So we have broken the big question down to a smaller question which is How do land and water interact? We made two different kinds of water and land models. The first model was, the best case scenario which is residential where you could fish, swim and there was not pollution in the water. The second model was where there was a bad case scenario which there was pollution in the water and on the land, and there was a factory on the top of the river, which is bad because the oil or whatever the factory is producing will most likely go into the river.

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