Question

On a cold winter day the sections of a bridge will...

Select one:
a. expand.
b. contract.
c. remain the same.
d. none of the above.​

Answer 1

Explanation:

on a cold night the sections of the bridge will contract (option B), because the bridges are made up of iron or steel which is a good conductor of heat. So, in cooled weather it will contract.

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Answer 2

On a cold winter day the sections of a bridge will a. expand.

• On a cold winter day it is expected that the bridge made up of iron or concreate expand due to the freezing of water inside the bridge.
• Water when solidifies takes the form of ice.
• The solid structure of ice will expand the volume of the bridge as a result it will cause disintegration of internal structure of the bridge.
• Due to disintegration of internal structure physical weathering of bridge is likely to happen.
• Also rapid freezing and thawing of the bridge due to climate change will cause the disintegration of the bridge.
• Physical weathering can be defined as the natural process in which due to change in temperature hot or cold the rocks break apart due to rapid heating and thawing causes disintegration of internal rock structure. Also due to the deposition of ice in the rock causes freeze fracture of the rock.
• Due to freeze fracture due to physical weathering the bridge is likely to break apart.

Learn more about weathering:

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