What two things do particles do when they are heated? 1. 2.
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Transcript of What two things do particles do when they are heated? 1. 2.
![Page 1: What two things do particles do when they are heated? 1. 2.](https://reader035.fdocuments.in/reader035/viewer/2022062423/56649ef45503460f94c07e15/html5/thumbnails/1.jpg)
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What two things do particles do when they
are heated?1.
2.
![Page 3: What two things do particles do when they are heated? 1. 2.](https://reader035.fdocuments.in/reader035/viewer/2022062423/56649ef45503460f94c07e15/html5/thumbnails/3.jpg)
Because the particles speed up and get farther apart what
happens to the volume of the object?
3.
![Page 4: What two things do particles do when they are heated? 1. 2.](https://reader035.fdocuments.in/reader035/viewer/2022062423/56649ef45503460f94c07e15/html5/thumbnails/4.jpg)
Take a look at this side walk.
Why is there a cut made in the cement?
(hint: think of your last answer)
4.
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Would the crack in the sidewalk be bigger or
smaller in the summer?•5.
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Look this bridge expansion joint. Here is an enlarged view. Why
would bridges need these?6.
![Page 7: What two things do particles do when they are heated? 1. 2.](https://reader035.fdocuments.in/reader035/viewer/2022062423/56649ef45503460f94c07e15/html5/thumbnails/7.jpg)
Think of railroad tracks. They also have an
expansion joint. How do you think this one
works?7.
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What do you think might have happened
to these tracks?8.
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Here is the answer to number
eight. How did you do?
This track was laid in February; the picture was taken in August.
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Now for the really tough one. When you put a thermometer into hot water why does the
mercury go up?9.
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How did you do?
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Talk to your table partners and explain what is going on with this piece of metal.
Brass side expands more than steel when heated, and contracts more when cooled.
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Can you think of any other structures besides
bridges and railroads that need to have
expansion joints? List 3.10.
11.
12.
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Water is the only substance that does not
contract with cold or the loss of heat.
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Water molecules in crystal form have an open-structured hexagonal arrangement, so water expands upon freezing (water becomes less dense).
Give an example of when you saw evidence of water expanding as it froze.
13.
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Can you think of a reason that a pipeline would have to be like this? Why would it be made in segments?14.
15.