Question

what is temperature,what is thermal expansion
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Answer 1

Answer:

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. ... The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.

Temperature is a measure of how hot or cold something is; specifically, a measure of the average kinetic energy of the particles in an object, which is a type of energy associated with motion. ... To answer that question, a physical scientist would measure the temperature of the liquid metal.

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Answer 2

Answer:

$\huge\underline\mathtt\green{Temperature:}$

Temperature is a measure of how hot or cold something is; specifically, a measure of the average kinetic energy of the particles in an object, which is a type of energy associated with motion. ... To answer that question, a physical scientist would measure the temperature of the liquid metal.

$\huge\underline\mathtt\green{Thermal Expansion:}$

Thermal expansion is the tendency of matter to change in shape, volume, and area in response to a change in temperature. ... The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion. It is found to generally vary with temperature.