Breanne's Watershed Blog Page


The first step was that we took our test tubes and added 20ml. of water in each tube. The second step is that we added the duckweed. Next we counted the fronds, then we put 1ml. of liquid fertilizer in each tube. The last step is that we placed all 4 tubes in a rack that we put under the growth lamp, to collect and analyze data.

Phosphorus Levels

In science we are learning how phosphorus affects the way plants grow. The way we are going to answer this question is by experimenting. The plant we are experimenting on is duckweed. Duckweed is a plant that prefers to grow in water than soil. So we added phosphorus to the plant to see how it grows, maybe it will grow faster or maybe it will grow slower. My prediction is that it will grow slower because thanks to some research one of my classmates shared was that phosphorus takes away the oxygen that plants need to grow. A trustable website to confirm this research is: this website is helpful with our investigation. Also if you add too much phosphorus the plant will grow and duplicate an extreme amount of times, you would need to add a just right amount keep it under control. We also read an article about the phosphorus levels in Lake Champlain. The article stated that the phosphorus comes mostly from agriculture and the second largest is the forest lands. This shows that Lake Champlain is full of phosphorus. Let’s hope that the lake get’s better.

Oxygen Levels

The other day in science we did a test for oxygen levels in Cedar Lake and our classroom aquarium with the guppies. The first test we did was with the Cedar Lake sample, we added iodide azide first and that allowed us to see the precipitant called flock, what I observed is that after we added the iodide azide it looked a bit foggy. Next we added manganous sulfate it made it look orange and clumpy. After that we added something else but i forgot what it's called and it made it darker. Next we added sodium thiosulfate and it got way clearer. With the aquarium sample first we added Iodide azide it looked yellow, it got clumpy too when you added manganous sulfate but it wasn't the same color it was a bit lighter. When you add the sodium thiosulfate it was clearer. OUr conclusion is that the aquarium and the pond water is not that healthy, few species of fish and plants can live in the water. I hope that the water get´s healthier in the future.


This weekend I saw some pollution. On October 20th I saw rain pooling on the road and washing away some oil that I saw. I saw a little but not that much, but I also saw water that was flowing down the parking lot and it had some bubbles in it. I also saw some non-point source pollution. The pollution I saw was a soda bottle outside of Pizza Putt. I also saw cigarette buds outside of walmart, although whenever I go there I see people smoking. I saw some point source pollution. The pollution I saw was actually me because me, my mom, and my brother, went to get materials for my costume and we drove around a lot and that makes smoke from the car spreading in the air which is polluting the air, but other cars were on the road too.


Land and water interact by runoff picking up trash. The trash that rivers can get from a runoff is from littering. But the litter is nonpoint source pollution because we don’t know who dropped the trash. Another example of nonpoint source pollution is if we see that oil is in a river but we don’t know where the oil came from. Point source pollution is when we can see that someone has done that pollution. If the pollution is from a factory that means that it is industrial use that is creating the pollution, but if someone’s sewage is going into the river that is called residential land use that’s creating that pollution. Pollution can come from many different places, and can happen in many different ways.

No comments:

Post a Comment