Final answer:
A hypothesis is an educated guess arrived at logically from a theory that can be tested. In the context of scientific observations, it is a tentative explanation that puts the system being studied into a form that can be tested.
Step-by-step explanation:
A hypothesis is an idea arrived at logically from a theory. It can be thought of as an educated guess, and it can be tested. It is a tentative explanation for scientific observations that puts the system being studied into a form that can be tested. For example, if a scientist observes that plants grow taller in the presence of sunlight, they may form a hypothesis that sunlight is necessary for plant growth.