When a scientist makes predictions about new facts based on existing theories,(s)he has created a new __________.
A) theory
B) fact
C) speculation
D) hypothesis

Question

Quizplus · Accepted Answer

When a scientist makes predictions based on existing theories, (s)he has created a new hypothesis. A hypothesis is an educated guess or prediction based on existing knowledge and is often used to guide further research and experimentation.

When a Scientist Makes Predictions About New Facts Based on Existing