Distinguish between a scientific hypothesis and a theory.
A) A scientific hypothesis must be testable, while a theory has already been tested.
B) Once a scientific hypothesis has been proven to be accurate, it becomes known as a theory.
C) In order to be scientific, an hypothesis must be backed by a theory.
D) A scientific hypothesis is a testable assumption, while a theory is a well-verified idea used to explain a broad range of phenomena.
E) Only a scientific hypothesis is subject to scrutiny, while a theory is generally accepted to be true and thus does not change.
Question 2
When you increase the temperature of a substance, the molecules vibrate ________.
A) faster and the molecules move farther apart
B) faster and the molecules more closer together
C) slower and the molecules move farther apart
D) slower and the molecules move closer together
E) none of the above
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