Willow Tree Experiment

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Recommended: Experimental design with plants

The three experiments that I will be discussing today is Jan Baptist van Helmonts Willow Tree Experiment, Joseph Priestleys Mint in Jar Experiment, and Jan Ingenhousz Elodea & Bubbles Experiment. In all three of these experiments they talk about things dealing with plants. Jan Baptist van Helmont talks about the weight of plants. Joseph Priestley talks about how even in a closed container a fire can burn if a plant is inside of jar to produce oxygen. In Jan Ingenhousz experiment he talks about plants producing oxygen under water. Even though all three experiments are completely different they revolve around one big main idea.

In Jan Baptist van Helmonts Willow Tree Experiment he talks about how trees gain their mass. The hypothesis to this experiment is "if the soil weighs one hundred pounds, then the willow tree will also weigh one hundred pounds." In this particular experiment the independent variable would be the soils weight. Your dependent variable would be the willow tree because it should change its weight to whatever the soil weighs. If this experiment is true then your tree should weigh the same amount as your soil. The flaws in this …show more content…

The hypothesis to this experiment is "if you place a plant under water in direct sunlight, then it will produce oxygen bubbles." In this experiment the independent variable where the plant is placed. The dependent variable is the water the plant is put in. Your controlled variable would both be the type of water used and the type of plant used. The conclusion to this experiment would still ben your hypothesis because its true which is " if you place a plant under water in direct sunlight, then it will produce oxygen bubbles." The only flaws in this experiment were that they used the same type of water and they did not try any other water. I believe that this experiment is

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