1. THEORY vs. LAW

2. HYPOTHESIS An educated prediction that can be tested
A decisive statement
Test one variable

3. SCIENTIFIC THEORY
Explains how or why nature works- provides reasons (EXPLANATION)
Well-tested
Supported by data
Widely accepted by sci. community
Often changing (dynamic)
Complex

4. Examples of Theories Plate tectonic theory Dino extinction theory
Big Bang Theory
Climate change theory
evolution

5. That’s pretty darn good!
“It’s Only a Theory”
That’s pretty darn good!

7. SCIENTIFIC LAW
Describes what nature does under certain conditions (DESCRIPTION)
Well tested- widely accepted
Supported by data
Stated briefly
Often math equations

8. Examples of Laws Newton’s Laws of Motion Hubble's Law (galaxy motion)
Kepler’s law of planetary motion
Law of crosscutting relations (age of rocks)
The term “law” is rarely used anymore

9. Which is better?
Neither!

10. Which is more true?
Neither!

11. Theories do not turn into laws!