Evan's Watershed Blog Page

Science Blog
5/30/17


Question 1: In the previous section you observed how temperature affects the amount of DO. What trend did you see?: The more dissolved oxygen there is the more photosynthesis there is in the body of water.

Question 2: How can increased plant growth both increase and decrease DO in water?: Plant growth can increase too much. The plant will eventually die. Then, decomposing bacteria will use up the dissolved oxygen.

Question 3: An ecosystem includes the organisms that live in it.How can changes in the temperature in an ecosystem change the organisms that live there?: The organisms that like cold water will only survive cold water and organisms that like warm water will only survive in warm water.

Question 4: What is thermal pollution?: When humans pollute water it changes the temperature of the water.Thermal pollution is caused by factories and much more things can cause thermal pollution.

Question 5: How do scientist measure the quality of water using temperature?: Scientist measure water quality by using the temperature of the body of water then they move to another part of that same body of water and if the temperatures are way different then there's a problem with that body of water.

Question 6: Why is it important to measure the turbidity of the water?: To Look at how much clay,silt, organic and not organic chemicals are in the water.

Question 7: What causes turbid?: Clay, silt, organic, not organic and very tiny organisms all make turbidity in the water.

Question 8: Why is fecal coliform measured to determine the health of a river?: When Scientists measure fecal coliform and there is no fecal coliform it is good. If there is fecal coliform the body of water is in bad condition.

Question 9: How do fecal coliform bacteria end up in a river?: Fecal coliform can enter a body of water from runoff or sewage discharge.

Question 10: What role do humans have in altering temperature, turbidity, and amount of fecal coliform in water?: Humans pollute water which brings the temperature up. Also humans bring in not organic matter which makes the water more turbid. Humans add fecal coliform to water through sewage discharge.
May 1, 2017
Water Filter Experience

My experience with the filters were good because I got to see how filters work and how they help the earth. What I learned was that not every filter worked but there was one that was crystal clear and it was the sand and gravel filter. The filter that I thought would work the best was actually the worst which was the screen. I thought the screen would work the best because screens have little holes that only water can fit through.

The ideal filter was the sand and gravel because we put the gravel in the bottle first so he rocks made a barricade and then we put the sand in so it would absorb the water so it was hard to get through. It was the ideal filter because it took awhile but it made the water clear and it was the slowest but cleanest filter.

The more worthy resource was the money Example: If you pay 500$ for it to be done in 2 seconds instead of paying 5 cents and waiting for 100 minutes.

I predicted that the paper filter would just fall apart because that’s what paper does when it gets wet.

I predicted that the screen would work because there is small holes in it to separate the water from the stuff that pollutes the water.

I predicted that the sand and gravel would pollute the water because of the sand the water would take the sand with it and it would pollute it.

Procedure for Phosphorus
12/15/16

I predict that the phosphorus will slow the growth of the duckweed down because the fertilizer will pollute the water that the duckweed grows in and change the water quality to affect the duckweeds growth.

These are the steps that we used for our phosphorus investigation

STEP 1: Add 20 ml of distilled water into each 28 ml test tube.

STEP 2: Add 4 duckweed plants into the 28 ml test tube

STEP 3: Add .28 ml of liquid fertilizer into each 28 ml test tube


Phosphorus and Duckweed investigation
12-5-16

About 16% of phosphorus comes from forest land. In Otter creek the watershed covers about 17.1%. Statewide estimated phosphorus contributions from forest land can run as high as 35% for the Missisquoi bay lake segment and as low as 0% for the Cumberland bay lake segment. Forest lands are the second largest contributor of phosphorus within the Otter creek watershed next to agriculture which is about 49%. About 16.4% comes from stream erosion. About 14.4% comes from developed lands (parking lots, unpaved and paved roads, roofs and large athletic fields). Wastewater treatment Facilities, 3.2%. Implementation plan requires a 5% reduction in phosphorus from forest land. In the Missisquoi bay and in the lake segment known as south lake B 50% and 40% reductions, respectively, given the water quality concerns in those watersheds.

addison independence
Gaen Murphree


11/18/16
Science blog
On 11/17/16 are class and another class did a science experiment to test the water quality of a fish tank and monkton pond.We put chemicals in the water of monkton pond and the fish tank this is what happened to the water when we put chemicals in the monkton pond water:The water started bubbling up when we first put the chemicals in it, After the water stopped bubbling up it was mostly clear but a tiny bit cloudy, When we put a different kind of chemical in the water it turned a mango color,after the color went down we noticed that the water got chunkier,Then when we tested the water in the tank the pond water was darker then the fish tank water,Then when we added another kind of chemical and it took 14 drops for it to be clear again.This is what happen when we put chemicals in the fish tank:When we put the chemicals in the fish tank water it was a lighter mango then monkton pond water was when we put the chemicals in monkton pond it was a darker mango,When we put another chemical in the water it took 10 drops until the water was clear again, After the color was down there was a coat of chunky stuff on the bottom of the jar that has the water in it,The fish tank water wasn’t as chunky as the monkton pond water was.


10/25/16
Science Blog
Over the weekend we had to find point and nonpoint sources. This is what I saw for nonpoint: At the soccer field there was a piece of trash rolling around this is nonpoint because nobody saw them do it.Another nonpoint I saw was smoke coming out of houses from there woodstoves this is nonpoint because a machine is polluting the earth not a human.It rained alot so the mud/human waste/animal waste got washed up into lakes rivers ponds oceans this is a nonpoit because nature was doing it not a human.The last nonpoint I saw was smoking exhausts it is a nonpoint because a machine was doing it.The point sources I saw where:I saw someone throw gum on the ground which runoff could wash the gum up and take it to the water and upset the water cycle this is a point source because a human did it.The next point source I saw was people who put gas in there car can make the gas leak when they take the gas pump out of the car or the gas overflows this is a point source because someone made the gas leak. Another point I saw was someone had a fire which could spread the ashes around then they could get washed up by runoff or when the fire goes out chloe could be left out and then the runoff could take it this could be nonpoint or point because someone made the fire but the fire went on it’s own.The last point source I saw was people left little chunks of cut would outside which runoff could wash it up and bring it to the water and upset the water cycle.



10/14/16
Science blog #1

This week in science we learned the meaning of point and nonpoint. Point means someone threw trash or something on the ground to pollute the earth and someone saw them do it, nonpoint means a machine is polluting the earth or someone threw a piece of trash or something on the ground but nobody saw them do it. The big thing that we have studyed this week is pollution and how it affects the earth.In our reflection peice we wrote down some things that pollute the earth like leaking pipes,

barrels leaking,chemicals,smokestacks,sewage discharge,fertilizer,urban runoff,litter and salt and sand.The big question is how does water quality affect the ecology of a community.

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