2. The story of Newton’s Law of Universal Gravitation

3. Why? The story of Newton’s Law of Universal Gravitation One day...

4. The story of Newton’s Law of Universal Gravitation He thinks...

5. The story of Newton’s Law of Universal Gravitation He made hypothesis... The earth’s force of gravity pulled the moon just as it pulled the apple towards the ground.

6. The story of Newton’s Law of Universal Gravitation the Law of Universal Gravitation to explain the motion of the moon. He proposed...

7. He used the Law to calculate the motion of the moon and other planets. The story of Newton’s Law of Universal Gravitation The results are the same as the observations made by astronomers.

8. Today, we still use this Law to calculate and predict the motion of, e.g. The story of Newton’s Law of Universal Gravitation Space shuttle

9. What does this story tell you about scientific theories ? Scientific theories give explanations of happenings. give predictions, i.e. say what is going to happen. The story of Newton’s Law of Universal Gravitation What if...

10. Scientific theory is accepted Scientific theory may be overthrown If... Predictions Agree with observations Do not agree with observations