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Dime cómo flotan los barcos?
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Shirley Willis |
Uses simple experiments and activities, to explore concepts such as density, upthrust, and water displacement; and to explain why objects float or sink. |
OL16053541W |
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Floating and Sinking (Start-Up Science)
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Jack Challoner |
Simple activities introduce the qualities of things that float in water, the difference between floating and swimming, and how balloons and airships stay up in the air. |
OL482727W |
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Liquid and buoyancy
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Barbara Taylor |
Illustrates with experiments how objects displace water to stay afloat, why some objects float and others sink, and why the water's ability to sustain weight makes swimming, diving, and other water s… |
OL648269W |