1. What is the difference between heat and temperature?
2. What is a bimetallic strip? Give one use of it.
3. At which temperature the value in Fahrenheit and Celsius scale will be equal? Explain.
4. Show an example where you can observe the flow of heat by all the 3 ways.
5. What are the two conditions necessary for conduction?
Answers
Answer:
1 ans-Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules. Heat measures how energy moves or flows. ... 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 ans-A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass
3 ans--40 °C
The Fahrenheit and Celsius scales have one point at which they intersect. They are equal at -40 °C and -40 °F. The simple method to find when two temperature scales are equal to each other is to set the conversion factors for the two scales equal to each other and solve for temperature.
4 ans-Heat is being transferred from the hot end of this rod to the cold end via conduction, but the hot end of the rod is also radiating heat via that orange glow.
5 ans-The condition required for conduction of heat is the temperature difference between the ends of material (rod or any other form). Also, for conduction between two bodies, the bodies need to be in contact, along with having a temperature difference of course
answer
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