16/12/2019 Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) 0Comments by Gate Academy Welcome to your Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. At a common temperature, a block of wood and a block of metal feel equally cold or hot. The temperatures of block and wood are ___________Has no changeLess than the temperature of the bodyEqual to the temperature of the bodyGreater than the temperature of the body2. The energy conversions in a hydroelectric power supply isnone of the abovesound → kinetic → mechanical → electricalheat → kinetic → mechanical → electricalpotential → kinetic → mechanical → electrical3. When a torch light is switched on, the statement that most represents the energy conversion is that electrical energy is converted tolight energy onlylight and heat energies onlypotential and kinetic energies onlyheat energy only4. The heat from a fire at one end of a closed room reaches some one at the other end of the room mainly byradiationdiffusionconductionreflection5. Energy is aextensive propertyall of the mentionedproperty of the systempoint function6. What type of energy is contained in a body at rest?ElectricalHeatKineticPotential7. Heat current is maximum in which of the following?Copper and steelCopperSteel and copperSteel8. If you rub your palms together for some time, you feel warm. The action amounts to convertingchemical → potential → heat energypotential → kinetic → heat energysolar → chemical → mechanical → heat energypotential → chemical → heat energy9. A swinging pendulum converts potential energy toKineticChemicalHeatElectrical10. Heat flow into a system is taken to be ____, and heat flow out of the system is taken as ____positive, positivenegative, negativenegative, positivepositive, negative11. Heat transfer and work transfer areboundary phenomenaall of the mentionedenergy in the transitenergy interactions12. The sound wave moves faster invacuumairsolidalcoholwater13. In an electric motorElectrical energy is converted to Mechanical energyElectrical energy is converted into sound energyChemical energy is converted into electrical energyElectrical energy is converted into heat energy14. In a vacuum, heat can travel by:convection onlyconduction onlyradiation onlyradiation and convection15. Electricity or electric current is theflow of electrons in a wireflow of energy in a wireenergy supplied to a wiremovement of atoms through a wire16. How much is the average temperature at depth of 10 km of earth surface?200°C20°C900°C650°C17. Which of the following is not a form of energy?LightHeatSpeedSound18. Energy stored in foods and fuels is calledelectrical energychemical energylight energyheat energysound energy19. What type of energy is contained in the battery of a torch light?MechanicalChemicalHeatLight20. If the amount of heat energy received per unit area from the sun is measured on earth, mars and Jupiter, it will be ___________In decreasing order Mars, Earth, JupiterThe same for allIn decreasing order Jupiter, Mars, EarthIn increasing order Jupiter, Mars, Earth21 out of 20Time is Up!
