Write your answers down to the following questions and then compare and discuss (yes, you get to talk!) about your answers.

What is a fact?

What is the difference between a theory and a guess?

Can scientists say with any certainty what they know and don't know? Explain your answer.

Is something true if you can't directly observe it and test it? How do scienctists learn about something they cannot witness?

More to think about...

Can you see gravity? How do we know it's there?

Read about science and scientific thinking at: http://www.quackwatch.com/01QuackeryRelatedTopics/science.html

Indiana Standards: Nature of Science