UPDATED ACTUAL Questions and
CORRECT Answers
Independent Variable: - CORRECT ANSWER - the variable that I change in the
experiment
Dependent Variable: - CORRECT ANSWER - the variable that I am measuring (it depends
on the independent variable)
Control Variable: - CORRECT ANSWER - variable that stay the same
Controlled experiment: - CORRECT ANSWER - an experiment in which only one
variable is changed at a time
Hypothesis: - CORRECT ANSWER - an educated guess (If..., then...)
You have measured the rate at which a fish breaths at various temperatures by counting the rate
at which its gills open. The data table is shown below. Create a line graph depicting the results.
Breathing Rate (breaths/minute)
Temperature (°C)
19 5
25 10
30 20
34 30
38 35 - CORRECT ANSWER -
, What is the independent variable? Explain why. - CORRECT ANSWER - Temperature, it
is the variable that is being changed
The dependent variable? Explain why. - CORRECT ANSWER - Breathing rate, it is the
variable that is being measured and it depends on the temperature
What happens to breathing rate with increase in temperature? - CORRECT ANSWER -
Breathing rate increases
What might be an example of a control in this experiment? - CORRECT ANSWER - Same
tank, same fish, same pH of water, same time of day
What do you think would happen if you raised the temperature even more? Why would it be a
bad idea to do this? - CORRECT ANSWER - The breathing rate would increase even
more, but if the temperature gets too hot the fish could die.
A test was conducted to determine the highest possible soda geyser when placing Mentos into the
soda. The following data was collected: - CORRECT ANSWER - Type of Diet soda
Diet Coke
Diet Coke
Diet Coke
Diet Coke
Amount of soda in the container (L)
2
2
2
2
Temperature of surroundings (oC)
24
24