# data[].attributes.headline
Telephone wires expanding and contracting with the weather

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Telephone wires expanding and contracting with the weather

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-On a hot day concrete runway sections in airport expands and this cause cracking.  To solve this problem we leave small gabs between sections.

-Telephone wire contract on cold days.  To solve this problem, we leave wires slack so that they are free to change length.

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As we heated the ball it expanded and it soon could not fit through the ring because the particles vibrate causing more space between the particles.

# data[].attributes.body
1. Firstly we gathered all the equipment and our goggles for safety.
2. We turned on the gas and then lit the bunsen burner with a match.
3. Then one person started our timer while another person held the ball over the bunsen burner.
4. As we stopped the timer, the ball was taken away from the flame.
5. To see if the soid expanded,we tried to put it through the ring. (It didn't fit)
6. To make sure we didn't burn the table we placed the hot ball in the beaker with the water to cool it down.
7. To finish up we put everything away to where it was when we came in.

# data[].attributes.body
-Bunsen burner
-Ball and ring
-Beaker with some water

# data[].attributes.body
If the solid is heated it will then expand and not fit through the ring.