The independent variable in this experiment is the concentration of salt in the water. The dependent variable is the time it takes for the water to cool to 3 degrees Celsius.
The constant in this experiment is the volume of the salt solution in each plastic glass (225 mL).
The control in this experiment is the glass containing 0 percent salt solution.
Juan wanted to find out whether the concentration of salt in water affected how long it takes water to cool. He put 4 identical plastic glasses, each of which contained 225 mL of a different concentration of salt solution, into a freezer. The different salt concentrations were 0 percent, 10 percent, 20 percent, and 30 percent. He recorded the amount of time it took for each solution to cool to a temperature of 3 degrees Celsius.
Identify the independent and dependent variables, constant and control in this experiment.
1 answer