Independent vs. Dependent Variables. Independent Variable The one factor that you (the scientist) intentionally change in an experiment – What is being.

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Presentation transcript:

Independent vs. Dependent Variables

Independent Variable The one factor that you (the scientist) intentionally change in an experiment – What is being tested

What is the independent variable? Will the starting temperature of chocolate affect how long it takes for it to melt?

Independent variable= The starting temperature of the chocolate

Dependent Variables The factor that might be affected by the independent variable – What is observed and measured in the experiment

What is the dependent variable? Will the starting temperature of chocolate affect how long it takes for it to melt?

Dependent variable= The time it takes for the chocolate to melt

The Difference The dependent variable depends on the independent variable. – The time it takes for the chocolate to melt depends on the starting temperature of the chocolate. (It wouldn’t make sense the other way around)

Practice identifying variables: Does listening to classical music make you more relaxed (slower heart rate)? Does studying make your grades in school better? Do yellow flowers attract more bees than red flowers?