1. The Nature of Science

2. You have two beakers, each containing a clear liquid and an ice cube.
Observing
You have two beakers, each containing a clear liquid and an ice cube.
What do you observe?

3. Fact Opinion Inference Fact & Opinion Is true for everyone
Personal belief that is not founded on proof
Inference
Conclusion based on observation

4. Density
A measure of how heavy a solid, liquid, or gas is for its size
Density is expressed in terms of mass per unit volume

5. Observing Density

6. Comparison of the density of different liquids
Graphing Density
Descriptive title
UNITS!!! Label
Comparison of the density of different liquids 1 .8 .6 .4 .2
Density 9n g/c3
D / R V Label
Specific I / M V Label
General
I / M V Label
Red Blue Green
Type of liquid
Scale
Scale

7. Writing Experimental Questions
Effect & Affect
What is the effect (of the independent / manipulated variable) on the (dependent / responding variable)?
How does (the independent / manipulated variable ) affect the (dependent / responding variable)?

8. Developing Hypotheses
If, Then
If the (independent / manipulated variable) changes, Then the dependent / responding variable) will change. [How will it change? Increase? Decrease?]

9. Designing Experiments
Very detailed
Step-by-step
Independent / manipulated variables identified
Dependent / responding variables identified
Units of measurement identified
Repeated trials

10. Descriptive title with UNITS
Making Data Tables
Descriptive title with UNITS
I / M V Label
Density of Liquids in g/c3
Room for Data
Repeated Trials
Reduced Data

11. Restate original question & hypothesis Answer original question
Drawing Conclusions
Restate original question & hypothesis
Answer original question
Accept or reject hypothesis based on data
Describe data as evidence
Describe relationships
Identify sources of error

12. Can you make your beaker look like this?
Density Challenge!
Can you make your beaker look like this?

13. Think about density first Think about color last
Hint
Think about density first
Think about color last