Question

the experiment was:- A student conducts an experiment in which she places 30 leaf disks into three different beakers and removes the gases from the disks until they all sink to the bottom. The leaf disks in two of the containers are un-boiled and healthy. The leaf disks in one container were boiled for 5 minutes. In addition, two of the containers were exposed to sunlight and one was left in the shade. Data was collected every minute for 5 minutes.


Identify the two experimental variables. Explain how the student was able to test two variables yet maintain a controlled experiment.

Answer 1

Explanation:

Each controlled experiment looks at the effect of one variable (the independent variable) on some event or condition (the dependent variable). So the independent variable is the factor being tested and the dependent variable is the factor being observed and measured