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yungggangtsa
yungggangtsa: 9 months ago

When are hypotheses supported in science?

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when are hypotheses supported in science


Scientific Hypothesis, Theory, Law Definitions

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** Scientific Hypothesis, Theory, Law Definitions **

*Learn the Language of Science*

By Anne Marie Helmenstine, Ph.D., About.com Guide

*See More About*

· chemistry definitions
· hypothesis
· scientific laws

Words have precise meanings in science. For example, 'theory', 'law', and
'hypothesis' don't all mean the same thing. Outside of science, you might
say something is 'just a theory', meaning it's supposition that may or may
not be true. In science, a theory is an explanation that generally is
accepted to be true. Here's a closer look at these important, commonly
misused terms.

*Hypothesis*

A hypothesis is an educated guess, based on observation. Usually, a
hypothesis can be supported or refuted through experimentation or more
observation. A hypothesis can be disproven, but not proven to be true.

Example: If you see no difference in the cleaning ability of various
laundry detergents, you might hypothesize that cleaning effectiveness is
not affected by which detergent you use. You can see this hypothesis can be
disproven if a stain is removed by one detergent and not another. On the
other hand, you cannot prove the hypothesis. Even if you never see a
difference in the cleanliness of your clothes after trying a thousand
detergents, there might be one you haven't tried that could be different.

*Theory*

A scientific theory summarizes a hypothesis or group of hypotheses that
have been supported with repeated testing. A theory is valid as long as
there is no evidence to dispute it. Therefore, theories can be disproven.
Basically, if evidence accumulates to support a hypothesis, then the
hypothesis can become accepted


Source: chemistry.about.com/od/chemistry101/a/lawtheory.htm

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