1. What is thermometer?
2. Describe yarious units of heat energy.
3. Why are ice blocks wrapped in saw dust or woolen blanket?
4. Write any two practical applications of heat insulators.
5. Draw a neat labeled diagram of Thermos flask.
Answers
Answer:
ans -1- A Thermometer is a device that measures temperature or a temperature gradient.
Answer:
1. instrument used to measure degree of hotness or coldness of a place or body
2. BTU (Btu) - British Thermal Unit - also known as a "heat unit" in United States.
Calorie.
Joule.
3. The air filled in the fine pores of saw dust is an insulator of heat. This air does not allow heat from outside to pass to the ice thereby preventing its melting.
4.Thermal insulators, disallow heat to move from one place to another. Hence, we use them in making thermoplastic bottles. They are also used in fireproofing ceilings and walls. Sound insulators help in controlling noise level, as they are good in absorbance of sound.
im sorry i cannot do number 5
Explanation: