1. SEPT 8 2016 Go to google classroom
Open up today’s assignment-LAB NEWTON’S PENCIL LAB
PreAP/gt: don’t forget to turn in Newton’s Law slide
REMINDERS: OPEN HOUSE TODAY
LAB TODAY -NO OPEN-TOE SHOES
CCA= SEPT 20TH
PROJECT COMING UP: NEWTON’S BALLOON CAR

2. Logical, problem-solving using step-by-step procedures.
The Scientific Method

3. Sept
LAB TODAY
NO CHROMEBOOKS NEEDED

4. •A question without an answer that compares variables.
Problem Statement
•A question without an answer that compares variables.
Should be what you want to find out.
–Example: Does the MASS OF MY CAR EFFECT THE DISTANCE IT TRAVELS?

5. After identifying a problem, a
EDUCATED GUESS is developed.
What you think the results of the experiment will show.
Example: If THE MASS OF THE CAR IS SMALL THEN THE CAR WILL TRAVEL FAR because MASS EFFECTS THE ABILITY TO MOVE…(explain why)
Hypothesis

6. a series of carefully planned steps of the experiment that will be followed to answer the problem and test the hypothesis.
Note: An experiment can only test one independent variable at a time.
Note: To ensure reliability and validity, repeated trials should be done.
Procedure

7. Scientist make using their senses.
Observations
What do you see? Did it change? Is there an odor? Did the texture change?

8. Observations lead to
conclusions about observations
results

9. Example:Does the MASS OF MY CAR EFFECT THE DISTANCE IT TRAVELS?
What two things are changing?
MASS, AND DISTANCE
These are the VARIABLES. There are two kinds of variables:

10. There are 3 kinds of variables: independent variable
What Are Variables?
Anything that is changed in the experiment either by the scientist or as a result of a change by the scientist
There are 3 kinds of variables: independent variable
dependent variable
Control

11. (Also called Manipulated Variable)-
The cause- the variable that the scientist changes. “I” change this variable by myself independently.
Example:Does the MASS OF MY CAR EFFECT THE DISTANCE IT TRAVELS?
Independent Variable in example: MASS: THINGS USED TO BUILD CAR (we change them on purpose)
Independent Variable

12. (Also called Responding Variable)
_________________________Variable- the factor or outcome to be measured in the experiment.
Variable we are trying to find out (data you are collecting)
Example:Does the MASS OF MY CAR EFFECT THE DISTANCE IT TRAVELS?
Dependent Variable in example: DISTANCE (We don’t know them before we start.)
Dependent

13. ________________________ the part of the experiment that is not changed from how it would happen naturally or the original directions in order to have something for comparison.
Example experiment: Does the amount of MASS put on my OF MY CAR EFFECT THE DISTANCE IT TRAVELS?
CONTROL

14. are collected during the experiment through numeric measurements and observations.
Graphs
Drawings
Pictures
Charts
Tables
And so on….
Data/Results

15. After analyzing data, a scientist makes a _______________which is valid only after multiple experiments supports
Answers the problem
Explains what the data shows (data should support conclusion)
States if the hypothesis was supported or rejected
Conclusion

16. visualize numerical data
Let’s Review:
Why Do We Use Graphs?
Graphs help us .
visualize numerical data
There are several different types of graphs:

17. are used to show a comparison of multiple objects.
BAR GRAPHS

18. are used to compare the parts of a whole.
Pie Graphs

19. are used to the show the relationship between variables.
Many times line graphs show change over time.
Line Graphs

20. Draw this on your notes and label
DRY MIX
Y-axis
Dependent Variable
also called
Responding Variable
X-axis
Manipulated Variable
also called
Independent Variable

21. Let's
Practice

22. The Independent
Variable is:
Temperature
Time
Solubility
2. The Dependent
a. Temperature
b. Time
c. Solubility

23. 3. The variable that changes depending on some other factors
Independent Variable
Dependent Variable
Controlled Variable

24. 4. A variable that does not change for the duration of an experiment.
A. Independent Variable
B. Dependent Variable
C. Controlled Variable

25. 5. What you think the results of the experiment will show.
Problem
Hypothesis
Conclusion
Data

26. 6. What is an opinion, or conclusion, based on observed facts.
Observation
Inference
Data
Conclusion