Need help with variables
Posted: Sun Feb 08, 2009 6:28 pm
My niece is doing an experiment for her science class and I'm a little confused on the variables. She has 3 plants, all of the same kind. She wanted to see what feeding vinegar to a plant would do to it, her hypothesis was it would kill the plant. She was correct. The plants also had the same amount of sunlight, all 3 were put in the same window, and left there. She fed Plant A 1 cup of water every other day. She fed plant B 1 cup of vinegar every other day, and plant C had nothing fed to it. I think the plant, and what happend to it, is the dependent variable. What is the controlled variable, and what is the independent variable?