In all science experiments variables can be ... When all other variables are controlled an experiment is a fair test. You can learn more about fair tests here. When planning an investigation ...

The main variables in a science experiment are the independent ... keep the same during the experiment to make sure it’s a fair test. Independent Variable is the volume of the object.

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At the world's largest science fair, which starts Sunday in Dallas ... older guys" in her community to let her use their guns to test her invention. She came up with a 3-pound plate that combines ...