At the beginning of an experiment, a scientist proposes an educated guess

about what will happen. What is this guess called?

Answer: Hypothesis

Explanation:

These are the steps to the Scientific Method:

1. Make an observation.

2. Ask a question.

3. Form a hypothesis, or testable explanation.

4. Make a prediction based on the hypothesis.

5. Test the prediction.

6. Iterate: Use the results to make new hypotheses or predictions.

Hypothesis