unit 1: scientific inquiry & method\nd) do different brands of paper towels absorb more water?\n•…

unit 1: scientific inquiry & method\nd) do different brands of paper towels absorb more water?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:\ne) does the diameter of a marble affect how long it takes for the marble to roll down a ramp?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:\nf) are hummingbirds attracted to the colour red?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:

unit 1: scientific inquiry & method\nd) do different brands of paper towels absorb more water?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:\ne) does the diameter of a marble affect how long it takes for the marble to roll down a ramp?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:\nf) are hummingbirds attracted to the colour red?\n• independent variable:\n• dependent variable:\n• controlled variables (3):\n• control group:

Answer

Answer:

d)

  • Independent variable: Brand of paper towel
  • Dependent variable: Amount of water absorbed
  • Controlled variables (3): Amount of water available, Temperature of water, Size of paper - towel piece
  • Control Group: A standard - brand paper towel (or a non - tested, common brand)

e)

  • Independent variable: Diameter of the marble
  • Dependent variable: Time it takes for the marble to roll down the ramp
  • Controlled variables (3): Height of the ramp, Surface material of the ramp, Starting position of the marble
  • Control Group: A marble of a standard diameter (e.g., a commonly - available marble size)

f)

  • Independent variable: Color (presence of red)
  • Dependent variable: Number of hummingbirds attracted
  • Controlled variables (3): Type of feeder, Location of feeder, Time of day
  • Control Group: A feeder of a non - red color (e.g., white)

Explanation:

Step1: Identify independent variable

The independent variable is the factor that is changed or manipulated in an experiment.

Step2: Identify dependent variable

The dependent variable is what is being measured or observed, and it depends on the independent variable.

Step3: Identify controlled variables

Controlled variables are factors that are kept the same throughout the experiment to ensure that only the independent variable affects the dependent variable.

Step4: Identify control group

The control group serves as a baseline for comparison in the experiment.