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Answer 1

Answer:

1.Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules. ... Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R)

2.-0.15 c

3.Fixed points are used in calibrating thermometers. To calibrate a thermometer is to mark a thermometer so that you can use it to measure temperature accurately. A fixed point is a standard degree of hotness or coldness such as the melting point of ice or boiling point of water.

4.If should not be corrosive to the container. It should not be poisonous or otherwise dangerous if the thermometer breaks. It needs to have a different thermal expansion than the container. It needs to be clearly visible and easily readable in the tube.

5.373.15 k

6.a).Linear thermal expansion is ΔL = αLΔT, where ΔL is the change in length L, ΔT is the change in temperature, and α is the coefficient of linear expansion, which varies slightly with temperature.

b).Coefficient of superficial expansion = Increase in area / (Initial area – Rise in temp) (°C) = 2 × coefficients of linear expansion. So, the increase in surface area of 1 m2 surface area of a solid for the rise of temperature 1K is called the coefficient of superficial expansion of the material of that solid.

c).This equation is usually written as ΔV = βVΔT, where β is the coefficient of volume expansion and β ≈ 3α. Note that the values of β in Table 1 are almost exactly equal to 3α. In general, objects will expand with increasing temperature. Water is the most important exception to this rule.

Explanation:

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