Mr. Allen held out a glass of water with three ice cubes in it. “Why do things float?” he asked the class. No one said a word. The whole class was 1 . “Anyone?” Mr. Allen smiled at his students. “Let’s brainstorm some answers.” He swirled (旋动) the glass gently....
Why do things float? A study of the place for alternative models in school science.Selley, Nicholas
Why do things float in water? Objects are made up of very tiny molecules. Molecules can be packed in close together like in a rock or more spread out like in bubble wrap. The positioning of molecules affects the density of an object. Objects with tightly packed molecules are more dense th...
So, the float test only comments on the freshness of the egg. An older egg that fails this test isn’t necessarily bad for consumption, it’s just not fresh. Interestingly,studieshave shown that the float test can also tell you the age of a fertilized egg that is developing into a chic...
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Why Do Corpses Float Face Down? Most corpses are seen floating face-down. When a corpse drowns, it does so head first as the head is heavier (or has a high specific gravity) than the feet. This results in what is called the “drowning position.” The head faces down, with the arms...
If you fill a rowboat with five people and cargo, most likely it will sink depending on the total weight. However, if you fill a commercial fishing boat with the same amount of weight, it will float because its buoyancy (or ability to carry more cargo and displace more water) is so mu...
Why Would Stools Float? There are several reasons why poop floats and never seems to sink. Too much gas.You may have too much gas in you due to your diet, which can make your stools float. Some people think that floating poop is caused by fat, but it’s usually caused by gas. Rese...
`dad joke` noun - a dad joke is a short joke, typically a pun, presented as a one-liner or a question and answer, but not a narrative. Generally inoffensive,…
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