What does control mean in scientific terms?

Answer 1

A control is something that stays the same in a science experiment
In science terms it means that in the project nothing is being tested so its left alone.

Answer 2

A control is anything that stays the same during the experiment. For example say you were testing the affects of different liquids on plants; some controls would be the temperature you keep the plants, the amount of light you give them, etc.

Answer 3

A control group is a group that doesn't have the variable you are testing, so you can see the effect of using the variable compared to if you haven't used it at all, or with different amounts.

Answer 4

The control is a variable that stays the same throughout the experiment.