2007-02-05 02:38:31 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
In any measurement situation there are a lot of variables - temperature, wind speed, humidity, velocity, acceleration, vibration, size - that can affect performance or measurement. In any given experiment, there are some variables that are expected to change - say length - when others change - say temperature - so it is important to keep the other variables from changing unexpectedly, either by measuring them and accounting for the change they would cause or preventing them from changing.
2007-02-05 02:47:58 · answer #1 · answered by Mike1942f 7 · 0⤊ 0⤋
In any experiment, it is necessary to find individual differences in data that vary. When these variables are controlled for, ormade constant or eliminated as causes, the result of the experiment is clearer. An example of a variable could be room temperature, which may affect the reaction of two chemicals mixed together. Controlling the variable would be repeating the experiment at the same temperature, thus eliminating that one thing as a cause of the reaction.
2007-02-05 02:48:03 · answer #2 · answered by fangtaiyang 7 · 0⤊ 0⤋