Noah's Watershed Blog Page

The science blog turbidity, temperature and fecal coliform
May 30, 2015

The more D.O. you have means the more photosynthesis you get. And photosynthesis is a good thing.

Increased plant growth can increases D.O. by adding photosynthesis which adds D.O. Increased plant growth can also decrease D.O. by having too many plants grow. Then the plants will die and decompose and when they decompose they use all the D.O. in the water.

Organisms that like colder water will die or have to move away to a colder body of water. So if cold body fish want to survive they’ll have to move. That means warm body fish will take the place of the cold body fish.

When humans pollute water it changes the temperature, this is called thermal pollution. One source of thermal pollution is when occurs when factories send out smoke and oil. Many other things also cause thermal pollution.

Scientists test water quality by taking the temperature of a body of water at beginning and the end if, the temperatures are drastically different that the water is poor quality. If the temperatures are close the water is good quality.

To see how much clay, silt, organic and inorganic things are in the water.

clay, silt, organic and inorganic things. These things all make water turbid.

When fecal coliform is measured, if the water has no fecal coliform the water is in good condition. If the water has fecal coliform in it, it is in bad condition.

Fecal coliform can enter a body of water through sewage discharge or runoff. This means farms that have fecal coliform on their land should move far away from bodies of water.

Humans pollute water which brings the temperature up. Also humans bring inorganic matter to the water which makes water more turbid. Lastly humans add fecal coliform to a body of water through sewage discharge.

Water Filter

I believe the best water filter design would start with the paper filter to get some of the particles out of the water then, I would completely clean it with sand and gravel. I know this is how both cleaned due to testing both of them. Also when they clean they complement each other because one cleans some but goes fast it takes 28.85 seconds to fill ¼ of a cup and the other goes slow 2 minutes and 3 seconds to fill ¼ of a cup and cleans it very well. This is my Ideal water filter.
Personally I would rather save money than time, because we basically have an unlimited amount of time and we do not have an unlimited amount of money to build filters. Do to this would should focus more conserving money.

Procedure 12-15-16

Add 20 ml of distilled water into each test 28 ml test tube.
Add 4 duckweed plants to each 28 ml test tube
Add .28 ml of liquid fertilizer into each test tube.
Science Blog Duckweed Prediction

I think the fertilizer will affect the growth and not make it grow as fast as it could with clean water. One reason is because it will pollute the water that the duckweed lives in and feeds off of. Another reason is because it will shock the roots of the duckweed.

Phosphorus test part 1

I think phosphorus will slow the growth of aquatic plants because it will pollute the water that the aquatic plants feed off of. One reason I know it pollutes water is because in our early learnings we found out fertilizer pollutes waterand phosphorus is very similar. And I think that duckweed gets a lot of nutrient and if their is phosphorus it will affect the duckweeds nutrition. 17.1% of phosphorus of all of Vermont’s phosphorus comes from forest lands and When I have gone on lake champlain it is bordered by forest which means phosphorus can get into the lake easily. It also said that 16% of the phosphorus in the lake comes from forest lands. It also said 49% of all of Vermont phosphorus comes from agriculture which means a lot of that has to make it into the lake. Another phosphorus source is parks, parking lots and unpaved roofs which makes up 14.4% and some of that must also make it into lake champlain. One more phosphorus adder is waste water treatment facilites it contributes 3.2% and some of that also has get in. If that much pollution is getting into the water than the lake water that helps aquatic plants grow will get severely polluted and can not help the duckweed grow as much as it can. Also to much phosphorus decreases dissolved o2 which indicates health and when the healthiness of the water decreases it ussually becomes harder for aquatic plants to grow.

Addison independent Monday, November 7 2016 - Page 23 by Gean Murphree

This week in science we did a test of dissolved oxygen to see the quality of cedar lake and the same test on our fish tank and compared them. First we added iodide azide which made it turn flocky but then it started to clear but did not clear completely. Then we added manganous sulfate which made it turn orange and yellow and almost looks rusty and it looks like there is pulp in the clogging in the middle. And then we had to wait for the chemical to reach the middle to add the next chemical. The next chemical sulfamic acid cleared the flock but made the water look darker yet more see through, almost like root beer. Next we added 15 drops of sodium thisulfate to clear the cedar lake water and 12 for the aquarium to clear it. I was surprised because every time we added a chemical to both of them the same thing happened but for the last chemical it took longer for the cedar lake water to turn clear than the aquarium water. After these test it said that it is 3mg/L and it said that cedar lake was unhealthy.


This week we took notes on point source and non point source pollution and this is what we found

non point source
when I was walking through my wood I found a puddle of dirty liquid sand I could not identify where it was coming from which means it's non point source pollution . Another example is when I saw a pipe pouring brown liquid on the side of the highway which was on a hill which goes into the woods. Another example of non point source is when I found some litter next to my road which could be dragged into a body of water. Heres yet another example of non point source pollution is when my dad pours water into our lawn mower and some misses it could rain and drag the oil into a body of water.

point source
when I was looking out my window and I saw a smokestack puffing smoke which pollutes the environment. Another point source polluter I saw was when someone was cleaning there car and bleach and soap was rolling down the hill. I was shooting paintball guns with my brother and It was raining so when the bullets hit something It would splatter oil and the water would wash the oil off and rolling down the hill. Also we have an chicken fenced in area and they poop in it all the time and it and made the poop liquid which can get onto plants roots and pollute the vegetables and if there was ground water it can carry the poop from the roots and to the nearest body of water.
Science blog

This module we learned how land and water interact and how they affect each other. The most recent thing I learned is that there are 2 kinds of pollution, non point source and point source. Non point source is when there is pollution and you can not identify where it is coming from. An example of non point source source islike when there sewage in the water and you don’t know where it comes from. Point source is when there is pollution and you can identify right away what is polluting the earth. An example is if someone is pouring a dirty liquid into a sewage drain.

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