Q1. Differentiate between conduction and convection.
Q2. Name the process in which heat is transferred by the movement of liquid or gas itself.
Q3. Why is a fryingpan made of metal but the handle of frying pan is made of plastc or wood?
Q4. What is meant by poor conductors of heat?
Q5. What happen to the other end of spoon when a wooden spoon is dipped in a cup of ice cream.pls answers fast
Answers
1) In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.
2) convection
The process of transference of heat through a fluid (liquid or gas) is called convection.
3) Frying pans are used for cooking and hence they are too hot to handle by bare hands. These are made of metals which are good conductors of heat, so that food can be properly cooked. ... Since plastic or insulating materials are poor conductors of heat, it is easy to grip the pan here and the hand is safe.
4) A material can be a poor conductor of heat, electricity, or both. A poor conductor means that the substance will not easily conduct heat or electricity (or both) as easily as a conductor. For example, sand is a poor conductor of heat and electricity.
5) When one end of a wooden spoon is dipped in a cup of ice cream, there will be no change in the temperature of its other end because wood is a bad conductor of heat so there will be no flow of heat from one end to other.
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