Final answer:
When a scientist develops a hypothesis based on observation, such as hypothesizing all sheep are black, they must next look for evidence that can refute or confirm their hypothesis, such as finding a white sheep.
Step-by-step explanation:
When a scientist develops a new idea based on their observations, their next step is to test the hypothesis. To illustrate, let's imagine a scientist on an island with exclusively black sheep. This leads to the hypothesis that all sheep are black. Yet, to validate their hypothesis, the scientist must look for potential disconfirming evidence, such as the existence of a white sheep once they leave the island. This critical step is part of the scientific method—a process of experimentation and observation aimed at understanding phenomena.
Testing the hypothesis is key in the scientific process, as it helps to either confirm or refute a hypothesis. If evidence, such as a white sheep, is found, the scientist must revise their hypothesis or develop a new one. This reinforces the idea that science is an ongoing pursuit of knowledge, where theories are continuously tested and improved upon.