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Physics For Class IX (Science Group)
UNIT 9: THERMAL PROPERTIES OF MATTER
Self Assessment Questions and Test book Exercise
Self Assessment Questions:
Q.1: Differentiate between heat and temperature.Ans: Difference Between Heat and Temperature:
| S.NO. | Heat | Temperature |
|---|---|---|
| 1. | It is the form of energy. | It is a degree of hotness of a body. |
| 2. | Heat transfers from hot body to cold body as a result of difference of temperature between them. | It determines the direction of flow of heat from one body to the other body. |
| 3. | Heat of a body is the sum of all kinetic and potential energy of all the molecules constituting the body | Temperature of a body is the average kinetic nergy of its molecules. |
| 4. | Heat can be measures by a calorimeter. | Temperature of a body is measured by a thermometer. |
| 5. | Its SI unit is joule. Its other unit is calorie. | SI unit of temperature is Kelvin. Its other units are Celsius (C) and Fahrenheit (F). |
