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