In the last part of this experiment, the temperature of tap water was recorded for fifteen minutes as the tap water was heated in a beaker. Identify the dependent and independent variable.
(THE TEACHER Just said THE DEPENDENT AND INDEPENDENT VARIABLE but idk if he/she wants multiple VARIABLESSS) Justify the answer: (But How do you justify the answer, I'm confused.) ???
Independent Variable (variables that do not change throughout the experiment): timer, beaker, thermometer, bunsen burner & tubing, wire gauze, striker, red hot grippers, ring stand, graduated cylinder, glassware brush
Dependent variable: I'm not sure if some of the items above are dependent variable.
https://nces.ed.gov/nceskids/help/user_guide/graph/variables.asp
To identify the dependent and independent variables in the given experiment, we need to determine what is being measured and what is being manipulated.
In this case, the dependent variable is the temperature of the tap water. This is the variable that is being measured throughout the experiment. The temperature recorded for fifteen minutes is the result that we are interested in.
On the other hand, the independent variable is the factor that is being manipulated or changed by the researcher. From the information provided, we can infer that the independent variable in this experiment is the time. The researcher is measuring the temperature of the tap water at different time points (fifteen minutes), so time is the independent variable being controlled and varied.
Regarding the other items listed, such as the timer, beaker, thermometer, and various laboratory equipment, they are not variables but rather tools or materials used in the experiment. They are not the focus of the investigation and do not directly affect the relationship between the independent and dependent variables.