WHAT ARE THE INDEPENTENT, DEPENDENT AND CONTROLLED VARIABLES IN MY SCIENCE EXPERIMENT?

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WALLYLICIOUS asks:

HOW MANY DROPS OF WATER WILL A PENNY HOLD? USE EYE DROPPER TO DROP WATER ON THE PENNY, ONE AT A TIME. COUNT NUMBER OF DROPS TILL WATER SPILLS OVER THE EDGE. NEED TO KNOW THE VARIABLES PLEASE

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Expert

greenprof2

Aug 30, 2012

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What the Expert Says:

This isn't an experiment because you do not have a control comparing different "treatments." Properly this is called an "investigation." Nevertheless, you can identify variables involved: the coin (age, condition), the liquid (source), the dropper (opening size, amount of pressure on bulb), the surface the coin is on (level, material), the setting (light, temperature, humidity). Hope this helps.

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