Identifying variables and groups in an experiment?
Okay, for these problems I will give you the experiment and you tell me the control group, independent variable, etc.
ALSO, please explain to me how you got the answer. (:
Okay, here goes…
You water three sunflower plants with a cup of salt water. Each plant receives a different concentration of salt solutions, A fourth sunflower plant receives pure water. After a two week period, the height is measured,
a, Control variables:
b. Control group and experimental group:
c. Independent variable:
d. dependent variable:
Three pine trees are kept at different humidity levels inside a green house for 12 weeks, One tree is left outside in normal conditions. Height of the three is measured once a week,
a, Control variables:
b. Control group and experimental group:
c. Independent variable:
d. Dependent variable:
I am doing a test to see if there is a connection between how long you run and how fast your heart beats. I will be performing an experiment where a person will run for one minute and I will check their heartbeat. Then they will run for two minutes and I will check their heart rate. I will do this up to 6 minutes and see if there is a connection.
a. Independent variable:
b. dependent variable:
Thank you!!!
