Controlled Experiment Review

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What is a controlled experiment?

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A controlled experiment is a scientific test where one variable is changed while all others are kept constant to determine the effect of that variable.

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What is an independent variable?

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The independent variable is the factor that is changed or manipulated in an experiment to observe its effects.

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What is a dependent variable?

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The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

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What is a controlled variable?

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A controlled variable is a factor that is kept constant throughout an experiment to ensure that the results are valid.

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How does temperature affect battery lifespan?

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Decreasing the temperature of a room can lead to a longer lifespan of a battery, as lower temperatures can slow down the chemical reactions inside the battery.

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What is qualitative observation?

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Qualitative observation involves describing characteristics or qualities of an object or phenomenon, such as color, texture, or smell.

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What is quantitative observation?

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Quantitative observation involves measuring or counting characteristics, such as height, weight, or number.

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What is the purpose of a hypothesis in an experiment?

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A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

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What is the significance of replicating experiments?

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Replicating experiments is important to verify results and ensure that findings are consistent and reliable.

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What is the role of a control group in an experiment?

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A control group is used as a standard for comparison, where the independent variable is not applied, allowing researchers to see the effect of the variable.