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Rusting Iron Measures the Oxygen in Air
Why Streamlining Is Necessary
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air pressure alcohol aluminum ball balloon band boiling bottle bottom bulb burn carbon dioxide carbon tetrachloride cent center of gravity center of percussion chemical chlorine cloth coin cold color containing copper copper sulfate cork cube curve demonstrate dew point dissolve drop dry ice edge electric fill finger fire fluid force freezing friction gases glass hard water heat Heron of Alexandria hold ice cube inch inertia iron light liquid lower magnet material merely metal mirror moisture molecules move needle object ounces oxygen paper particles photograph potassium produce prove push reaction salt shown at right side silver smoke soap soda sodium solution sound waves speed spin starting friction steam string substance sulfate sulfur dioxide sulfuric acid surface tension teaspoonful temperature tin foil touch tube tumbler vapor vibration weight wire wool zinc