Science Practices

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What is an observation?

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An observation is a statement based on what one sees, hears, or experiences directly. It is factual and can be measured or recorded.

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What is an inference?

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An inference is a conclusion drawn from observations or evidence. It goes beyond the immediate data and involves interpretation.

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What is the independent variable in an experiment?

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The independent variable is the factor that is changed or manipulated by the researcher to observe its effect on the dependent variable.

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What is the dependent variable in an experiment?

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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 control variable?

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A control variable is a factor that is kept constant throughout an experiment to ensure that any changes in the dependent variable are due to the independent variable.

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What is a graduated cylinder used for?

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A graduated cylinder is a laboratory instrument used to measure the volume of a liquid accurately.

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What does it mean when we say 'air is matter'?

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Saying 'air is matter' means that air has mass and occupies space, which are characteristics of matter.

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What is the purpose of a hypothesis in scientific research?

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A hypothesis is a testable prediction about the relationship between variables, guiding the direction of the research.

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What is the scientific method?

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The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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What is the difference between qualitative and quantitative data?

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Qualitative data describes characteristics or qualities (e.g., color, texture), while quantitative data involves numerical measurements (e.g., height, weight).