SUBHAM TUTORIAL

                    subham tutorial                       science chapter  4                                     HEAT Questions:- 1. An example of the conductors of heat is A) Aluminium B) Wood C) Plastic 2. An example of the conductors of heat is A) Plastic B) Iron C) Wood 3. An example of insulators of heat is A) Wood B) Aluminium C) Iron 4. An example of insulators of heat is A) Aluminium B) Plastic C) Iron 5. The hotness of an object is determined by its __ __. A) Pressure B) Temperature C) Neither a or b D) Both a and b 6. Temperature of boiling water cannot be measured by a __ __ thermometer. A) Celcius B) Clinical 7. Temperature is measured in degree ___ _. A) Celcius B) Clinical 8. No medium is required for transfer of heat by the process of ___ _. A) Conduction B) Convection C) Radiation 9. A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of __ _ _. A) Radiation B) Convection C)

                           SUBHAM TUTORIAL                                    Class vii                           Science chapter 4                         HEAT                 BRIEFLY CHAPTER NOTES           Hot and Cold → The measure of degree of hotness or coldness of a substance is called its temperature. → The device that is used to measure the temperature of a substance is called thermometer. Measuring Temperature → Thermometers are of two types: (i) Clinical thermometer: Used for measuring temperature of human body. (ii) Laboratory thermometer: Used for measuring temperature of common objects. Reading a thermometer → The temperature range of clinical thermometer is 35ºC to 42°C and that of laboratory thermometer is -10ºC to 110ºC. The unit for temperature is °C. Step 1 : Note the temperature difference indicated between the two bigger marks. Step 2:   Note down the number of divisions between these marks. If there are five