Hypothesis, Theory, Law

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What is a hypothesis?

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A hypothesis is a testable statement or prediction about the relationship between two or more variables.

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What is a theory?

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A 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.

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What is a law in scientific terms?

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A law is a statement that describes a consistent and universal relationship observed in nature, often expressed mathematically.

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True or False: A theory can become a law if it is proven to be universally true.

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False. A theory and a law serve different purposes; a theory explains why something happens, while a law describes what happens.

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What does it mean when we say 'for every action, there is an equal and opposite reaction'?

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This is Newton's Third Law of Motion, which states that forces always occur in pairs.

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True or False: Scientific laws provide explanations for phenomena.

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False. Laws describe what happens but do not explain why it happens.

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What is the role of technology in scientific theories?

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Technology can enhance our ability to observe and test theories, leading to potential revisions or improvements.

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Give an example of a scientific law.

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An example of a scientific law is the Law of Conservation of Mass, which states that mass is neither created nor destroyed in a chemical reaction.

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What is the difference between a hypothesis and a theory?

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A hypothesis is a preliminary idea that can be tested, while a theory is a comprehensive explanation supported by a large body of evidence.

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True or False: Theories can change over time with new evidence.

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True. Theories are subject to change as new evidence and technologies emerge.