Heat Energy Worksheet-2
(a) Iron being a good conductor, conducts away heat given to paper
(b) Wood being an insulator, takes away all the heat
(c) Candle in case of iron rod, is near to the paper
(d) Paper, in first case, it thicker
(a) Container with thermocole: Melting time: 3 h 10 min
(b) Container with ice paper: Melting time: 2 h 0.5 min
(c) Container with sand: Melting time: 30 min
(d) Container with sawdust: Melting time: 1 h 15 min
(a) Mano meter (b) Barometer
(c) Thermometer (d) Voltmeter
(a) Temperature is a measure of the total energy in an object
(b) Temperature is a measure of the degree of hotness or coldness in an object
(c) Temperature is when the object expands
(d) Temperature is when the object contracts
(a) conduction (b) convection
(c) radiation (d) Conduction or convection
(a) Silver (b) Gold (c) Graphite (d) Mica
(a) less than 273 K (b) more than 273 K
(c) equal to 273 K (d) none of these
(a) less than 373 K (b) 373 K
(c) more than 373 K (d) none of these
(a) Mgh (b) mgl/h (c) mgh2 (d) ½ gh
(a) potential energy only
(b) kinetic energy only
(c) Both potential and kinetic
(d) none of these
Answer Key: