EIFFEL tower is well known as the most emblematic monument of the
city of Paris.It was built in 1889. Intriguingly, the average height of Eiffel Tower is 324 meters depending on the season. [ihc-hide-content ihc_mb_type=”show” ihc_mb_who=”2,3″ ihc_mb_template=”1″ ]
The structure material of this magnificent structure is made out of puddled iron.
During summer, the Eiffel Tower gets taller by 17 centimetres. But during winter it will shrink back to its original size.
During warmer days, thermal expansion causes the metal to “grow” (expand) and contract when the environment gets cold. When a substance is heated, the kinetic energy of the molecules of the substance increases and this in turn causes molecules and atoms to move more.
Now the substance is said to occupy more space than before. Conversely, when the same substance is cooled down, the kinetic energy decreases.
So, the atoms and molecules take up less space.
Whether the molecules expand or contract, their molecules stay the same size. It should be noted that it is only the space between them, that changes on heating or cooling. Some metals expand more than others due to differences in the forces between the atoms and molecules. [/ihc-hide-content]
