Welcome to your Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. Which of the statements is NOT true?convection process requires a material mediumnone of the aboveconduction is the only means of heat transfer in solidsconvection can take place in liquids and gases2. 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, Earth3. What type of energy is contained in the battery of a torch light?MechanicalLightChemicalHeat4. The transfer of heat between a wall and a fluid system in motion is calledconductionconvectionradiationnone of the mentioned5. Heat and work areinexact differentialsdepend upon the path followedall of the mentionedpath functions6. Heat current is maximum in which of the following?Copper and steelSteelSteel and copperCopper7. Heat flow into a system is taken to be ____, and heat flow out of the system is taken as ____negative, positivepositive, negativenegative, negativepositive, positive8. black body is at 727°C. It emits energy at a rate, which is proportional to ___________(727)2(1000)2(1000)4(727)49. The transfer of heat between two bodies in direct contact is calledconvectionconductionradiationnone of the mentioned10. Ratio of the amount of heat radiation, transmitted through the body to the amount of heat radiation incident on it, is known as _________TransmittanceInductanceConductanceAbsorbance11. Which of the following is true?both of the mentionedlatent heat of fusion is not much affected by pressurelatent heat of vaporization is highly sensitive to pressurenone of the mentioned12. If you rub your palms together for some time, you feel warm. The action amounts to convertingpotential → kinetic → heat energypotential → chemical → heat energysolar → chemical → mechanical → heat energychemical → potential → heat energy13. The path provided for flow of electric current is called:electric installationelectric diagramelectric pathelectric circuit14. Flutes, trumpet and saxophone belong to musical instruments group calledpercussion instrumentssound instrumentsstring instrumentswind instruments15. A pressure cooker reduces cooking time for food, because _______The higher pressure inside the cooker crushes the food materialBoiling point of water involved in cooking is increasedHeat is more evenly distributed in the cooking spaceCooking involves chemical changes helped by a rise in temperature16. Which of the following groups is all insulatorsglass, plastic, paperrubber, copper, irongraphite, paper, rubberiron, plastic, glass17. The sound wave moves faster inalcoholwatervacuumairsolid18. When a torch light is switched on, the statement that most represents the energy conversion is that electrical energy is converted topotential and kinetic energies onlyheat energy onlylight energy onlylight and heat energies only19. A school boy riding a bicycle is convertingNone of the aboveMechanical to kinetic energiesElectrical to mechanical to kinetic energiesChemical to mechanical to kinetic energies20. What type of energy is contained in a body at rest?KineticPotentialHeatElectrical21 out of 20Time is Up!
