The apparatus shown below is filled with water and slightly elevated on one side. A small crystal of potassium permanganate is placed on the other side. Illustrate the flow of convection current when the apparatus is heated from below as shown.
Important Questions on Heat and Temperature
Identify and write whether the objects shown in the following images are conductors or insulators.
Identify and write whether the objects shown in the following images are conductors or insulators.
Identify and write whether the objects shown in the following images are conductors or insulators.
Ice cubes put inside a thermocol box do not melt fast. Find out the reasons.
Is atmospheric heating due to conduction, convection or radiation? Discuss and record all important points supporting your answer.
With the help of given clues, complete the crossword related to heat and temperature.
Across
1. The transfer of heat by the circulation or movement of heated particles
2. A colour which is a good radiator as well as a good absorber of heat
5. The scale which shows the temperature of boiling water as 100
6. The instrument to measure temperature
8. Fastest mode of heat transfer
9. A material that is a poor conductor of heat
10. The scale which shows the temperature of freezing water as -32
11. SI unit of temperature
Down
1. The transfer of heat energy by vibrating materials in contact with the neighbouring particles
3. A measure of the warmth or coldness of an object or substance
4. A colour which is a poor absorber of heat
7. A material that easily allows heat transfer
