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| Imagine you have a glass of water with an ice cube in it. When the ice melts, will the water level |
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0% |
[ 0 ] |
| go down |
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71% |
[ 5 ] |
| or stay the same? |
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28% |
[ 2 ] |
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| Total Votes : 7 |
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TimRuns
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Joined: 11 May 2003
Posts: 10062
Location: Coquitlam, British Columbia
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 Posted: 08/18/03 - 14:20 Post subject: A Science Quiz for You
Here's a really good question I encountered while taking my first year physics class 2 years back. Ill post the answer on Wednesday night. Please post an explanation to your choice.
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TriBob
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Joined: 29 Aug 2002
Posts: 5771
Location: Lost in Transition
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Posted: 08/18/03 - 14:26 Post subject:
Simple answer: Ice floats because it is less dense then water. Therefore, volume decreases at it turns to water.
Science answer: This is caused by hydrogen bonds causing a crystal like effect during freezing. If I remember correctly, water is densest at 4C.
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Sahara
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Joined: 17 May 2002
Posts: 3345
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Posted: 08/18/03 - 14:44 Post subject:
THIS IS A FABULOUS THREAD. I've been trying to keep of list of simple science experiments for my elementary school kids for the coming year. things that they would be interested in AND that have results that they can track. They should be scientists themselves and not rely on me to analyze/understand. This is just perfect. Thanks TimRuns!
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TimRuns
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Joined: 11 May 2003
Posts: 10062
Location: Coquitlam, British Columbia
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Posted: 08/18/03 - 16:06 Post subject:
Actually I think I will make the due date Tuesday night instead.
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Sandy Cheeks
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Joined: 14 May 2002
Posts: 4605
Location: in the city that never sleeps
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Posted: 08/18/03 - 16:11 Post subject:
| Sahara wrote: | | THIS IS A FABULOUS THREAD. I've been trying to keep of list of simple science experiments for my elementary school kids for the coming year. things that they would be interested in AND that have results that they can track. They should be scientists themselves and not rely on me to analyze/understand. This is just perfect. Thanks TimRuns! |
Sahara, you should start a thread! I bet people would have a lot of great ideas.
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TimRuns
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Joined: 11 May 2003
Posts: 10062
Location: Coquitlam, British Columbia
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Posted: 08/18/03 - 16:30 Post subject:
| Sandy Cheeks wrote: | | Sahara wrote: | | THIS IS A FABULOUS THREAD. I've been trying to keep of list of simple science experiments for my elementary school kids for the coming year. things that they would be interested in AND that have results that they can track. They should be scientists themselves and not rely on me to analyze/understand. This is just perfect. Thanks TimRuns! |
Sahara, you should start a thread! I bet people would have a lot of great ideas. |
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