Inquiry Set Up
In our class we are doing an experiment to see how phosphorous can affect duckweed growth. If you want to try this out follow these simple steps.
Step 1- Get 4 test tubes.
Step 2- Fill the test tubes with 20 ml of distilled water.
Step 3- Put duckweed in the tubs and make sure you have 7-15 fronds in each tube.
Step 4- Put in about .5 (half) ml of liquid fertilizer in each test tube. Try and be as accurate as possible. Use eye droppers if necessary.
Step 5- Put the test tubes somewhere it won’t spill, make sure it’s in the sun.
Step 6- Check to see how many fronds are in each test tubes everyday for 5+ days.
Our class has started a new unit about phosphorus. Too much phosphorus can be really bad. In Otter Creek 49% phosphorus is coming from agriculture (farming.) Agriculture makes phosphorus by using fertilizer for their plants, then when it rains the fertilizer gets picked up by the water and moves to the lowest point and pools, or goes to a body of water. In Missisquoi Bay there is a lot of phosphorus and bacteria, they need to reduce the bacteria by 50%.
In science we have been learning about Cedar Lake (Monkton Pond) we took water from Monkton Pond and water from are guppy tank in our classroom and we tested the water. With Ms. Pierpont’s class we took those samples and tested them to see if the are good water. To have good water in Vermont is milligrams per square leder (mg/L) of oxygen, when we tested the pond water it only had 3mg/L that means that very little creatures can live in the water. Some classmates said when they went fishing they only caught sun fish and 1 person said they caught a bass, that's not very many types of fish. When we tested the guppy water it said that the water only had 2mg/L! The test said that meant creatures will have a hard time to live there. We figured out that are tank and pond are not healthy.
Over the past 5 days my teacher assigned me and other students to find 5 point source pollution and 5 non point source and how land and water interact. Some point source pollution i saw over the 5 days are,
I live right across from a farm and with animal waste it rains and then the water hits the waste and the bacteria gets carried by the water into sewer drains or a body of water.
Ashes from a fire
People like to throw their ashes into a nearby field or river which the same thing happens the rain hit the bacteria ect.
Construction machines I saw some construction and that's bad for the environment because when they dig up the ground they are changing the ground. Those machines sometimes have a oil spill and the smoke is not good either.
Throwing a cigaretteI saw someone throwing a cigarette on the ground and stomped on it, did you know that cigarettes take 10 years to disintegrate! Seeing people smoke got me thinking does smoking cause air pollution?
Some non point pollution is,
Oil in a puddle
I saw oil in a puddle, it was raining and the oil was on a slope so it would go to the lowest point of elevation.
When I was outside walking to shop to shop I saw lots of cigarette buds, cigarettes are filled with bacteria! So the same thing happens the rain water hits the cigarette and all the bacteria goes down into the sewer drain.
LitterLitter is also something that carries bacteria, germ ect. again the rain water hits the litter ect.
Omya is company that makes baby powder. I saw a bunch of smoke in the air I couldn't see the factory so that's why this is under the non point category but my mom did tell me that was a factory. The factory causes air pollution.
My teacher signed me to find how land and water interact. I found that in my back yard there is a path way of rocks and I saw that the water eroded the rocks and made a path of water.
Different Types Of Pollution
Our class has learned a lot about pollution. Did you know those big machines that construction workers use cause pollution to the air because smoke and oil come out of them. Pouring liquids into the sewer drains causes water pollution because all sewer goes into some type of body of water. Littering is a very big problem, because litter has lots of bacteria and germs. When it rains on an impervious surfaces (such as pavement or any flat and hard surface) the bacteria and germs come off the litter onto the water and finds it’s way into a sewer drain and/or into the nearest body of water. Cars also have oil sometimes leak out of them and then it rains, going into a body of water. There’s also a thing called point source and non-point source pollution, non-point source pollution means you can see pollution but can’t see who or what did it. Point source pollution means you can see someone causing pollution; for an example if you see someone pouring a liquid down the sewer drain is point source pollution. This is what we have been learning lately hope you enjoyed.