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Why do materials expand once heated?
This is called thermal expansion. When an object is heated, it's particles move faster. This causes greater separation between the particles and the object expands. The coefficient of thermal expansion describes how much an object will expand per degree with the same applied pressure.
Would a bimetallic strip work if the two different metals happened to have the same rates of expansion?
The one with the higher coefficient of thermal expansion.
Do all solids expand and contract by the same amount?
No. The rate of expansion/ contraction varies from one material to the next.
How is thermal energy and temperature same?
They are not the same. "Thermal energy" is the same as "heat".
How does a bimetallic thermometer works?
It is an experiment that demonstrates thermal expansion. Two metals with different thermal expansion coefficients are bonded together and when heated, one will expand more than the other, causing the strip to bend to one side. No matter which way you direct the flame, the metal which expands more will bend in the same direction. This is used as a thermometer because the more intense the heat, the bigger the curve.
Why do materials expand once heated?
This is called thermal expansion. When an object is heated, it's particles move faster. This causes greater separation between the particles and the object expands. The coefficient of thermal expansion describes how much an object will expand per degree with the same applied pressure.
Would a bimetallic strip work if the two different metals happened to have the same rates of expansion?
The one with the higher coefficient of thermal expansion.
Does all liquid has the same rate of expansion and contraction?
No, they vary
Is heat the same thing as thermal expansion?
i don't know hahaha! Shane you should think about going on a different website
What is meant by uniform rate of expansion and contraction?
It means expanding and contracting at the same speed.
If the expansion of the universe was reversed it would shrink to a point in about?
If the contraction occurred at the same rate as the expansion has, then it would take about fifteen billion years.
Define thermal stress and thermal strain?
Thermal stress ( and strain) arrises at situations, when there are some area with diffrent temperature in the same body. Or at situatiom - one konstruction part restricts thermal expansion ( dilatation ) another part. Or - two parts (f.e. austenit - ferrit steels ) are in welded connection.
Do all solids expand and contract by the same amount?
No. The rate of expansion/ contraction varies from one material to the next.
Why so solid stays the same size?
The thermal expansion of solids is much lower compared to liquids and gases; the bonding forces between particles are stronger.
Can you conclude anything about the thermal expansion rates of iron and brass?
Brass expands roughly 1.6 times more than iron when heated to the same temperatures.
How is thermal energy and temperature same?
They are not the same. "Thermal energy" is the same as "heat".
Wht is a good thermal conductor?
A good thermal conductor is a piece of material that conducts heat fast. This means it accepts heat readily but it also looses heat at the same rate of change.
