Final answer:
A hypothesis is a tentative explanation for scientific observations that can be tested. It is based on available scientific knowledge and can be supported or unsupported based on evidence.
Step-by-step explanation:
A hypothesis is a tentative explanation for scientific observations that puts the system being studied into a form that can be tested.
It is a testable, educated guess based on available scientific knowledge.
A hypothesis is a proposed explanation that can be supported or unsupported based on the evidence.