1. Theory, hypothesis, and law
The Nature of Science
Theory, hypothesis, and law

2. Nature of Science
Making observations, asking questions, gaining understanding and seeing patterns in nature. Terms to understand include: Hypothesis, Scientific theory, scientific law, fact, and belief

3. Hypothesis *Based on background observations and knowledge
*(If/then statement – causal or correlational relationship
*Educated Guess

4. SCIENTIFIC LAWS
based on repeated experimental observations describing some aspects of the universe.
Applies under same conditions
Implies causal relationship
EQUATION

5. Example Law of Gravitational Force: represented by an equation
F = G × [(m1m2)/r²]F = G × [(m1m2)/r²]
Kepler’s Law of Planetary Motion

7. THEORY A Principle supported by evidence – lots and lots includes
Factual evidence, proven hypothesis, laws of nature
Theory never becomes a law- have separate roles in science – a law can strengthen a theory

8. Examples of Theory Big Bang Theory Theory of heliocentricism
Theory of Evolution
Theory of relativity

9. Scientific Facts fact is a very elementary statement that are true
- a basic statement established by experiment or observation. Generally, a
fact is a very elementary statement that are true
Examples: Fossils show increased complexity closer to the surface Water boils at 212 degrees Celsius at sea level.

10. Belief
Not scientifically provable Examples: Rabbit feet provide good luck. Friday the 13th is a bad luck day!