1What is heat? Write its S.I. unit and name four sources of heat.
2Write any two differences between heat and temperature.
3What is a thermometer? Name its three kinds and say what each is used for.
4Draw a clean diagram of a laboratory thermometer and name its different parts.
5Explain how a laboratory thermometer measures the temperature of an object.
6Why must the capillary tube of a thermometer be extremely fine?
7Why is a digital thermometer used these days instead of a clinical thermometer for measuring a person's temperature?
8Three glasses hold cold, tap and lukewarm water. Why is it easy to order them by touch, and hard when all three are warm?
9A cup of tea is at 80 degrees Celsius and a bucket of water at 40 degrees. Which has the higher temperature, and which contains more heat?
10What are the units of temperature? Which is the S.I. unit, and in which unit is body temperature usually written?