Variables and Experiments

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What is a variable in an experiment?

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A variable is any factor, trait, or condition that can exist in differing amounts or types. In experiments, variables are used to determine their effects on the outcome.

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What is the scientific method?

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The scientific method is a systematic process used by scientists to investigate phenomena, acquire new knowledge, or correct and integrate previous knowledge. It typically involves making observations, forming a hypothesis, conducting experiments, and drawing conclusions.

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What is a hypothesis?

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A hypothesis is a testable prediction about the relationship between two or more variables in an experiment.

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What is the difference between independent and dependent variables?

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The independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable, which is the factor being measured or tested.

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What is an experiment?

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An experiment is a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

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What is data collection?

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Data collection is the process of gathering and measuring information on variables of interest in a systematic way that enables one to answer research questions, test hypotheses, and evaluate outcomes.

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

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A control group is a group in an experiment that does not receive the treatment or intervention, allowing for a comparison to be made with the experimental group.

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What is the purpose of conducting experiments?

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The purpose of conducting experiments is to test hypotheses, establish cause-and-effect relationships, and gain a deeper understanding of scientific principles.

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What is a conclusion in scientific research?

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A conclusion is a summary of the results of an experiment, indicating whether the hypothesis was supported or refuted based on the data collected.

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What is a scientific theory?

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A scientific theory is a well-substantiated explanation of an aspect of the natural world that is based on a body of evidence and has stood up to repeated testing and scrutiny.