Exploring the concept of buoyancy with a spring scale, golf ball, and water.
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Sound waves can be indirectly viewed when they are added to water.
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Bernoulli's Principle states that when air is flowing, it has less pressure. Thus when this young man blows between the two golf balls, they COME TOGETHER!
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Newton's First Law of Motion can be demonstrated with a soup can, index card, and quarter.
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According to Newton's First Law, when an index card is "shot" off the top of a soup can, the quarter falls into the can.
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Warm air rises. This is a principle of convection currents. When a can, cold from the ice chest, is dipped into soapy detergent, and the can is then warmed, the warm air rises to form the bubble.
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Sometimes one just has to roll up her sleeves and get her hands wet to understand which force is greater--the downward forces of water and gravity or the upward force of air pressure.
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Wow! Did the weight of the golf ball really disappear?
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How can this be? How can the golf ball weigh 50 grams in the air and zero grams in the water?
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