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Sponge Bob – Controls and Variables Control: When the IV is not changed but has other factors of the experiment. Variable: Any portion of the experiment.

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Presentation on theme: "Sponge Bob – Controls and Variables Control: When the IV is not changed but has other factors of the experiment. Variable: Any portion of the experiment."— Presentation transcript:

1 Sponge Bob – Controls and Variables Control: When the IV is not changed but has other factors of the experiment. Variable: Any portion of the experiment that can have more than one value. IV: What you are testing/changing. DV: What you are measuring.

2 Krusty Krab Breath Mints: 1. Group B is the control because they did NOT receive the secret ingredient. 2. IV = secret ingredient 3. DV = amount of bad breath 4. The breath mint with the secret ingredient appears to reduce the amount of breath odor more than half the time, but it is not 100% effective. 5. Placebo effect

3 Squidward’s Symphony 1. IV = instrument 2. DV = number of jellyfish 3. Conclusion: A. Clarinet = 37, B. Flute = 22, C. Guitar = 37, D. No music = 10 E. Squidward’s hypothesis is not proven. 4. Are the results reliable? Not really...

4 Super Bubbles 1. Claim: Bubbles will be twice as big. 2. IV = type of bubble solution 3. DV = size of the bubble 4. Averages A. Super bubble = 15.1 cm B. Regular soap = 11.5 cum C. Conclusion: The bubbles are bigger, but not twice as big. 5. Reliable? Consider having the each person blow 5 bubbles with each solution.

5 Sponge Bob Clean Pants 1. The problem is Sponge Bob’s pants are not clean. 2. IV = laundry soap 3. DV = How clean the pants are 4. Clean-O laundry soap does not appear to be effective in cleaning his pants.


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