EXERCISES
A VERY SHORT ANSWER TYPE QUESTIONS
1. A metal spoon is dipped in a cup of hot milk. Name the process by which the spoon absorbs heat from
the milk
2. Name the mode of heat transfer in which the particles of a medium actually move to the source of heat
3. During ventilation what is the direction of the convection current ?
4. Which device is used to measure temperature ?
5. What sets the convection current in water?
8. SHORT ANSWER TYPE QUESTIONS
shin between them
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Explanation:
A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of Conduction
2-CONVECTION, heatenergy is carried by the movement of particles of matter. In CONDUCTION,heat is transferred by particles vibrating. In RADIATION, heat is carried directly by electromagnetic waves.
3-Warm air being lighter rises up and leaves the room through the ventilators.
4-A thermometer is a device used for measuring tem
5-convection currents are the result of differential heating. Lighter warm material rises while heavier cool materials sinks. It is the movement which creates circular patterns known as convection currents in water.
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