Science Concepts and Terms

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Solid

Back

Definite shape, definite volume, particles are very close together and vibrate in place.

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Liquid

Back

Definite volume, takes the shape of its container, particles can flow over each other.

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Gas

Back

State of matter with no definite shape, no definite volume.

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Scientific Question

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Can be answered by making observations and gathering evidence.

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Hypothesis

Back

Written as an 'If, Then, Because' statement - 'IF' identifies the Independent variable, 'THEN' identifies the Dependent variable, 'BECAUSE' gives the reasoning.

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Dependent variable

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What will be measured and observed (data) to see how it responds to the independent variable.

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Independent variable

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The variable that is changed or manipulated in a scientific investigation. It is what you CHOOSE to change.

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Controlled Experiment

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One in which only one variable is manipulated and all others are kept constant.

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Constants

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Variables that are purposely kept the same throughout the experiment to guarantee a 'Fair Test'.

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Inferring

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Explaining or interpreting the things you observe, based on what you already know.