Question

Jackie’s science experiment is to test the effect of water temperature on the amount of light given off by glow sticks. Her materials list and procedure are listed below.

Materials:
a. Glow Sticks
b. Beakers
c. Thermometers
d. Hot Water
e. Room Temperature Water
f. Cold Water
Procedure:
A. Write on a piece of paper the terms: Hot, Warm, and Cold.
B. Place each piece of paper by a beaker.
C. Obtain some hot water and place it in the beaker you have designated as the hot beaker.
D. Obtain some warm water and place it in the beaker you have designated as the warm beaker.
E. Obtain some cold water and place it in the beaker you have designated as the cold beaker.
F. Place the thermometer into each beaker and record the temperature in your table.
G. Break the vial inside the glow stick by bending the glow stick.
H. Place one glow stick into each beaker.
I. Allow the glow sticks to sit in the beaker for at 5 minutes.
J.Compare the amount of light given off by each glow stick and record your observations.
What is the independent variable (test variable) in this experiment? What is the dependent variable (outcome variable) in this experiment?

Answer 1

The independent variable in Jackie's experiment is the water temperature, and the dependent variable is the amount of light given off by the glow sticks.

Step-by-step explanation:

In Jackie's experiment, the independent variable is the water temperature because it is the condition that she is changing on purpose to see what effect it has on the glow sticks. The dependent variable is the amount of light given off by the glow sticks, as this is what Jackie is measuring and what she expects to change in response to different water temperatures.

The independent variable in this experiment is the water temperature.

The dependent variable in this experiment is the amount of light given off by the glow sticks.