Scientific Theory

A set of principles that explains and predicts a phenomena is called a _____. 

• scientific law

• scientific method

• scientific theory

• scientific instructor

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Scientific theories are based on

• general assumptions of how systems work.

• mathematical principles that can be proven true.

• large amounts of data collected over time.

• observations from within only one scientific discipline.

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A scientific theory...

• is based on lots of evidence

• is not valid

• is not reliable

• has not been tested many times

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Which of these can change when new evidence is presented?

• theory

• law

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In which statement does the word theory mean scientific theory?

• In theory, the experiment will work as planned. 

• She has a theory about why the storm arrived later than predicted. 

• The atomic theory explains that material objects are made up of atoms. 

• The doctor’s prescription for curing a cold is based on his best theory or guess. 

A broad and comprehensive statement of what is thought to be true; it is supported by much evidence.

• hypothesis

• theory

• guess

• fact

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An idea or explanation based on observations and reaches general acceptance?

• Dependent variable

• Observation

• Hypothesis

• Theory

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What is a scientific theory?

• Rule of nature that sums up related observations to describe a pattern in nature.

• Explanation based on experiments -- most logical explanation.

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What does a scientific theory represent?

• A hypothesis yet to be tested

• A proven fact without any doubt

• An idea with a lot of supporting evidence

• A guess without evidence

What is the best definition of the term "theory", as it’s used in science?

• It is just a guess

• It is well tested set of ideas that explains events that occur in nature

• A theory is based on laws that can be proven true

• It is a hypothesis that has been confirmed