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Because during summer the weather is warmer and the metal rail lines will have expanded to their maximum length. If they were fixed rigidly in place during cold winter weather when they were later subjected to the heat of summer they would expand and buckle.
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How do you clean a pipe?
You can put a liquid pipe snake down your drain or put a hose down there
In the summer the power lines hang down between the posts then why dont the engineers tighten them up?
When objects are cooled down, they contract. Engineers who put up telephone wires in the summer leave the wires hanging slack so that in winter, the wires have a chance to contract without pulling the poles and damaging property or infrastructure.
Pour down use in sentence?
Kirsty put up her umbrella as it began to pour down with rain.
Can you put egg shells down a garbage diposal?
I PUT EGG SHELLS DOWN "MY" GARBAGE DIPOSAL...I WAS TOLD IT SHAPENS THE BLADES...IT WORKS! NO PROBLEMS!!! ALSO ICE CUBES WILL SHARPENS THE BLADES.
What should you put down on cement before laying carpet?
Moisture and mold resistant carpet padding.
Why do west Indians put their ears to railway tracks?
So they would hear the trains (if there are any).
What are the disadvantage of railway tracks if no put gaps?
If there is no gap between two successive railway tracks, the friction in it by train wheels increases its temperature and is expanded. Due to this, the tracks may get deformed when they force each other sideways.and due to thermal expansion also
What are two problems that expanding solids can cause?
hii i think that solids expand because when you heat whatever fits stright through something else you heat it on a Bunsen burner or something hot leave it for a couple of mins and then put what you have picked through the other thing then you will see that it wont go back through the other thing.....
Why is it difficult to lay railway lines in hilly areas?
The tracks are straight and flat so when you put then going up a hill, they need to be bent. They have to dig out of the hill to place the tracks into it. It takes a lot more work to do something as simple as laying tracks.
What happens dogs in summer?
You have to put them in front of a low fan that cools them down in the summer!
Are you legally allowed to put tracks from an album you have?
Legally allowed to rip tracks? Yes. "Put" tracks, as in... put online to share? No.
How many tracks are on a high density floppy disk?
There are no tracks on it until you put tracks on it.
Sex positions to put you into labor?
Ain't none. Neither will driving down rail road tracks. The baby comes when your body is ready.
How do you tie people to train tracks on red dead redemti?
You don't tie people to the train tracks. You can hogtie them and put them on the train tracks though.
Can you put CD tracks on an iPod?
Yes you can put CD tracks on an ipod. You need to download it to your computer, and then transfer the track to your music library. GOOD LUCK :)
What side of the summer pool cover touches the water in the pool?
Do I put the bubble side down to hold the heat in?
How do you put across in a sentence?
He ran across the train tracks.
