The factor measured or observed during an experiment.
The factor you test by changing it to observe how it affects another variable.
Which of the following is NOT one of the three main branches of science?
If you study layers of rock to determine their age, you're practicing ______
The SI unit for mass is the
Determining the speed of a race car falls under which branch of science?
An explanation or observation of events based on knowledge gained from many observations
Someone tells you that cats are blue. If you doubt this, you are being ___________.
