Put slice of "potato" in four diff bowls. Add diff "solutions" to each bowl. Which is Dependent Variable and which is Independent Variable?
Study this site, and then tell us what you think.
http://www.sciencebuddies.org/science-fair-projects/project_variables.shtml
Already saw site became more confused. Ind. Var is the one thing the scientist changes could mean...the solution is changed by me and the potato changes because of me?
The independent variable is what I change. In this experiment, the different solutions are the independent variables. The dependent variable is what I observe. Each potato slice is the dependent variable.
Got it. Thank you.
To determine the dependent variable and independent variable in this experiment, we need to understand the purpose and setup of the experiment.
The purpose of the experiment is to observe the effect of different solutions on a slice of potato. The independent variable is the factor that is deliberately manipulated or changed by the experimenter, while the dependent variable is the factor that is affected or influenced by the independent variable.
In this case, the independent variable is the different solutions added to each bowl. The experimenter controls and chooses which solutions to add to each bowl, deliberately manipulating this factor. The different solutions could be, for example, water, saltwater, vinegar, and lemon juice.
The dependent variable, on the other hand, is the factor that is being observed or measured as a result of the different solutions. In this experiment, the dependent variable can be the rate of browning or discoloration of the potato slices.
So, to summarize:
Independent Variable: Different solutions added to each bowl (water, saltwater, vinegar, lemon juice)
Dependent Variable: Rate of browning or discoloration of the potato slices.