Physical Science Concepts

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Physical Science

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The study of matter and energy and the relationship between matter and energy.

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Scientific Law

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The description of the relationships between observable phenomena; has been tested repeatedly but not refuted; not immutable and may be altered as new data becomes available.

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Principle

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A statement of scientific reality that appears to be true under many different circumstances.

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Theory

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An explanation about the natural world that has been repeatedly confirmed through observation and experiment and accepted by the scientific community.

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Closed Physical System

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A system isolated from the outside environment, which cannot exchange matter or energy with the system.

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Model

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An artificial representation of a real system or process, designed to help understand the structure or behavior of the actual system or process.

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Open Physical System

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A system that can be affected by the outside environment, by an exchange of matter or energy.

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Physical System

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In physics, a limited and defined set of parameters including space and matter.

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Energy

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The ability to do work

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gram

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The metric base unit to measure mass.