1. Scientific Method
A series of steps designed to solve a problem or learn more about the world around you.

2. Experiment
A procedure carried out to test a hypothesis

3. Purpose Do raisins or spaghetti move more in Sprite?
The goal or question of the experiment
Do raisins or spaghetti move more in Sprite?

4. Independent Variable changed on purpose The “cause”
There can only be one IV
Examples:
the temperature of water
the brand of diapers
Spaghetti or raisins

5. Dependent Variable
What happens in the experiment
A measurement
The “effect”
This is a result of changing
the independent variable.
Examples:
time for denture tablet to dissolve,
amount of water absorbed
How many times the spaghetti or raisins moved to the top

6. Hypothesis An educated guess about the outcome of an experiment.
If (independent variable is changed) then (this is how the dependent variable will change).

7. Constants Things that are kept the same.
Needed so that we get accurate results and only have one IV.
Examples:
amount of water or Sprite in beaker,
size of diapers

8. Procedure A series of steps in the experiment.
Should be able to repeated by more than one person

9. Repeated Trials Doing an experiment more than once
Necessary to check for accurate results
Do we get the same results each time?

10. Conclusion A final statement that compares the data to the hypothesis
Describes the results of the experiment

11. Example #1 Will a plant grow taller if it is given more fertilizer?
What is the independent variable?

12. Example #1 IV = Amount of fertilizer
Will a plant grow taller if it is given more fertilizer?
What is the independent variable?
IV = Amount of fertilizer

13. Example #1 Will a plant grow taller if it is given more fertilizer?
What is the dependent variable?

14. Example #1 DV = How tall the plant grows
Will a plant grow taller if it is given more fertilizer?
What is the dependent variable?
DV = How tall the plant grows

15. Example #1 Will a plant grow taller if it is given more fertilizer?
What are 3 constants for this experiment?

16. Example #1 Will a plant grow taller if it is given more fertilizer?
What are 3 constants for this experiment?
Kind of plant
Amount of soil
Amount of water