Presentation on theme: "Independent and Dependent Variables Biology Homework Chapter 1."— Presentation transcript:
Independent and Dependent Variables Biology Homework Chapter 1
Requirements The following steps are required for each problem on the homework. 1.Independent Variable 2.Dependent Variable 3.Control 4.Hypothesis (If…Then Statement) 5.Data Table 6.Sample Graph (extra credit)
Question 1: Light Bulb Temp. : Light bulb wattage (watts) Independent Variable: Light bulb wattage (watts) : L.B Temperature ( 0 Celsius) Dependent Variable: L.B Temperature ( 0 Celsius)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.
Hypothesis: If we increase the bulb wattage, then the bulb temp. will increase also. Sample Data Table: Independent Var. Dependent Var. (Bulb Wattage) (Temperature o C) 40 Watts 60 Watts 75 Watts 100 Watts
Sample Graph Bulb Wattage (Watts) Temperature (Celsius)