Please tell me what a control is in a science project. (please, I want real answers)?

A control is the part of your project that will offer a comparison to what you are doing to prove your thesis. In other words, if you are growing three pumpkins, and you want to compare a milk-fed pumpkin with a hydroponic pumpkin and a regular old pumpkin grown in dirt, with no additives, your regular old pumpkin is the control, because you did nothing special to it.


The control is the STANDARD you will compare your other parts of the experiment to.Please tell me what a control is in a science project. (please, I want real answers)?
A ';control group'; is a ';normal'; group.





You didn't say what kind of science project, so I will make up an example:





If you were testing plants to see if plants grow faster in water from a fishtank, you would have to have twenty plants, and water ten of them with fishtank water, and the other ten plants would be the *control* group, and you would water them with regular tap water.





In this example, the theory would be that the fish pee and fish poo would work as Fertilizer and make the ten experimental plants grow faster than the ten ';control'; plants.





Then at the end of a month or two or three, you measure the plants in centimeters to see if they grew faster (taller).


You would give the average height of the fishtank (aquarium) water plants, and the average height of the tap-water plants, as the result.





Of course, this is just an example, and If I was doing a Science Project, I would use the words ';urine'; and ';excrement'; , instead of ';pee and poo';.Please tell me what a control is in a science project. (please, I want real answers)?
Depends on the project. any details?





The control would be how the snail acts without the effect of music.





A control is something that is like a ';beginning';. nothing has happened to it yet.





For example- If you were comparing how a plant reacts in the sunlight the control would be what happens in no sunlight.
The control is in a science project is the system in which nothing is changed. For instance, if your experiment is about freezing water, your control would be water that you wouldn't have done anything to.
A control is something that doesn't get a treatment. For example , if you are testing the effectiveness of fertilizer on bean plants you would plant several plants. One plant would receive no fertilizer (this is the control) the other plants would receive different amounts of fertilizer or maybe even different types of fertilizer. At the end of the project you would compare the fertilized plants to the control plant that received no special intervention.