featuresDecember 3, 2015
Hooked on Science: Jumping cup
Materials n Two 18-ounce plastic cups Instructions STEP 1: Put one of the 18-ounce cups inside the other. STEP 2: Hold the cups close to your mouth, blow softly between the rims of the cups and observe. STEP 3: Hold the cups close to your mouth, blow harder between the rims of the cups and observe...Materials
- Two 18-ounce plastic cups
Instructions
STEP 1: Put one of the 18-ounce cups inside the other.
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STEP 2: Hold the cups close to your mouth, blow softly between the rims of the cups and observe.
STEP 3: Hold the cups close to your mouth, blow harder between the rims of the cups and observe.
Explanation
Blowing air between the rims of the cups creates a force, which pushes the top cup up. Blowing softly pushes the top cup up but not out. Blowing harder pushes the top cup up and out of the bottom cup.
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