Rating Newest Oldest. Best Answer: Control variable is something is an experiment that doesn't change. It is not what is being tested. It is used to validate results. For example, you want to test if plants grow better in red of blue light.ou need to give each plant the same amount of water at the same time and need to keep the temperature constant. You change the color of light. Your control variables are: amount of water, time of water, and temperature because they are always the same.
Aftermath at Gettysburg and the American Civil War. The Battle of Gettysburg changed the lives of not only the soldiers, but also Gettysburgâs residents. The Battle of Gettysburg resulted in 51,000 casualties (killed, wounded, captured and missing).
Fought July 1-3, 1863, the Battle of Gettysburg saw the Union Army of the Potomac field 93,921 men which were divided into seven infantry and one cavalry corps. Led by Major General George G. Meade, Union forces conducted a defensive battle which culminated with the defeat of Pickett's Charge on July 3. The victory ended the Confederate invasion of Pennsylvania and marked the turning point of the Civil War in the East.