Presentation on theme: "Independent and Dependent Variables"— Presentation transcript:
1 Independent and Dependent Variables Biology HomeworkChapter 1
2 RequirementsThe following steps are required for each problem on the homework.Independent VariableDependent VariableControlHypothesis (If…Then Statement)Data TableSample Graph (extra credit)
3 Question 1: Light Bulb Temp. Independent Variable: Light bulb wattage (watts)Dependent Variable: L.B Temperature (0Celsius)Controls:Distance temp. recorded from light bulb.Room temp. must be consistent.Time that bulb is turned on.Brand/Type of bulb is the same.Use the same lamp.
4 Hypothesis: If we increase the bulb wattage, then the bulb temp Hypothesis: If we increase the bulb wattage, then the bulb temp. will increase also.Sample Data Table:Independent Var.Dependent Var.(Bulb Wattage)(Temperature oC)40 Watts60 Watts75 Watts100 Watts