For experiment #2, graph the data with the voltage on the y-axis and time on the x-axis for each type (low, medium, high) of current drain device. The second experiment does not require any more data collection, but it does require looking at the data from experiment #1 in a different way.
#Scientific experiments variables how to#
Learn the steps to the scientific method, find explanations of different types of variables, and discover how to design your own experiments. Experiment #2: Compare the rate of voltage change between devices with low, medium, and high current drain. As any scientist will tell you, theres method to the madness.An independent variable is something that the experimenter manipulates to. Experiment #1: Measure the voltage of fresh AA batteries as they are used in different current drain devices. The three most essential variables in an experiment are the independent variable, dependent variable, and control variable.During the experiment, a scientist divides the tests into 2. To insure a fair test, a good experiment has only ONE independent variable. The independent variable is the one that is changed by the scientist. They can change the outcome of an experiment. Controlled variable: any factor during an experiment that a scientist purposely keeps the same. An experiment usually has three kinds of variables: independent, dependent, and controlled. There are two parts of this hypothesis, and thus two experiments: A variable is any one of the elements of the test which could be changed. If I perform this test in low, medium, and high current drain devices, then the rate of voltage drop will be slowest in the low current drain device and fastest in the high current drain device. If I use a AA battery in any current-draining device, then the voltage of the battery will drop over time.
How does the voltage of an AA battery change over time when used in low, medium, and high current drain devices?
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