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Old 06-09-2008   #17 (permalink)
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alexander
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Re: Hot water freezes faster than cold water

sweet, well i've been looking at some more experiments you can do with water for science fair projects

1:
floating paper clip (using the surface tension to make people wonder). take one paperclip and unfold it to use as the lowering tool, put another paper clip on top, lower the paperclip into the water, slowly, once the paperclip on top floats off, you can remove the tool clip
1.5:
now drop a drop of dish soap into the water, see what happens

2:
using water as a prism, in a clear round glass, filled with water, you put a mirror angled upwards. turn the lights off, and use the flashlight to acheive a rainbow

3:
Unmixable water, using 2 jars (baby food jars work well), some water, and a playing card, and 2 color dyes, you can do the following. First, fill the bottom jar with cold water, add some food coloring, like blue, mix it, finish filling the jar, all the way, to the rim, until water looks like it's almost about to run out.
take the second jar, put a little hot water into it, add some food coloring, different color from the first jar, and also put in enough warm water to where it looks like it's just about to float over.
take the playing card, and put that on top, tap gently to remove air, and make a "seal" in a sense, where the card is in flushwith the top, and there is no air in the jar. now, put your hand over the card, and flip the card and the jar over. now position the contraption over the first jar (make sure the lines meet, to prevent leaking). now, carefully remove the playing card from the middle. (what do you think is going to happen?)

off to find more fun things to do with water


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