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The human body contracts during winter and expands in summer primarily due to temperature regulation and physiological responses. In colder temperatures, blood vessels constrict to conserve heat, leading to a feeling of tightness and reduced physical expansion. Conversely, warmer temperatures cause blood vessels to dilate, promoting circulation and a sense of relaxation and expansion in the body. Additionally, factors like clothing and activity levels also contribute to these seasonal changes in body perception.
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Why do concrete slabs have space between them?
Those are expansion joints. During the changing seasons with varying temperatures, the slabs expand and contract. The spaces allow the slabs to expand without cracking the concrete.
Why do some bridges have metal plates that can expand and contract in the summer or winter?
Some bridges have metal plates, known as expansion joints, to accommodate the thermal expansion and contraction of materials due to temperature changes. As temperatures rise in summer, materials expand, and in winter, they contract. These joints allow for flexibility, preventing stress and potential damage to the bridge structure, ensuring safety and longevity. Without them, the bridge could suffer from cracks or structural failures.
Why do telegraph wires sag more in summer than in winter?
Sagging Power LinesIn the summer, power lines warm up with the weather. Since materials expand when they get warm, the power lines stretch out and sag. The opposite happens in the winter, as the power lines get colder, they contract. Also, in the summer the electrical load on the line is generally greater. This in turn causes increased temperature and can lead to the line sagging.
What is the length of shadows during the day in summer and winter?
Shadows lengths are less in summer than winter.
Are photochemical smog levels higher during the winter or the summer?
In the summer
Why will metal doors work easily during the winter but stick during the summer?
Metal doors can contract in cold temperatures, making them easier to open in the winter. In the summer, metal doors can expand due to heat, causing them to stick and become more difficult to open and close.
Why do concrete slabs have space between them?
Those are expansion joints. During the changing seasons with varying temperatures, the slabs expand and contract. The spaces allow the slabs to expand without cracking the concrete.
Will an aluminum door expand in the summer or winter?
It will expand in Summer as the heat makes the aluminum molecules move faster causing them to expand
Is the troposphere more dense in the summer or winter?
The troposphere is typically more dense in the winter due to colder temperatures causing air to contract and become denser. In the summer, warmer temperatures cause the air to expand and become less dense.
Why do some bridges have metal plates that can expand and contract in the summer or winter?
Some bridges have metal plates, known as expansion joints, to accommodate the thermal expansion and contraction of materials due to temperature changes. As temperatures rise in summer, materials expand, and in winter, they contract. These joints allow for flexibility, preventing stress and potential damage to the bridge structure, ensuring safety and longevity. Without them, the bridge could suffer from cracks or structural failures.
Why is a power line more likely to break in winter than in Summer even if it is loaded with the same weight?
Heat in the summer makes materials expand which make power lines somewhat elastic. During the cold months of winter the power lines contract. The difference of the reaction of the materials during seasons is why a power line is more likely to break in the winter than in the summer bearing the same weight.
What sports are popular with German students during summer and which during winter?
SUMMER : DRINKING BOUTS WINTER: DUELING
Why do wires hang loose on poles in summer?
Every material expands in heat and contracts in cold. The amount of change depends on the material in question. It is important in construction to take this into account. If the cables where hung too tight in the hot summer, when it got cold in winter they would be unable contract enough and would snap. If they where hung loose in the winter, then in summer the cables would sag far too much. An engineer must take this into account when selecting the material used, and planning how much slack to leave to ensure that they will be reliable in hot and cold conditions.
Is January during summer?
it is during the winter
Why is it advisable to allow telephone lines to sag when stringing them between poles during the summer?
Because they will contract in the winter. If you strung them tightly during summer, when the cold weather arrived, the lines would shrink, and maybe snap.
WHAT is Kentucky's average temp during summer and winter?
summer=101-102 winter=?
Why are railway tracks put down in summer?
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.
