Welcome to your Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. Woollen clothes keep the body warm because of wool ___________Decreases the temperatureIs a bad conductorHas no effectIncreases the temperature of body2. If you rub your palms together for some time, you feel warm. The action amounts to convertingchemical → potential → heat energysolar → chemical → mechanical → heat energypotential → kinetic → heat energypotential → chemical → heat energy3. What type of energy is contained in the battery of a torch light?LightChemicalMechanicalHeat4. A swinging pendulum converts potential energy toElectricalKineticChemicalHeat5. What type of energy is contained in a body at rest?ElectricalPotentialHeatKinetic6. When a torch is used to light up a dark room what energy conversions are likely to take place?Electrical to lightElectrical to heatElectrical to chemicalChemical to light7. Heat flow into a system is taken to be ____, and heat flow out of the system is taken as ____negative, negativepositive, positivepositive, negativenegative, positive8. Which of the statements is NOT true?none of the aboveconvection process requires a material mediumconduction is the only means of heat transfer in solidsconvection can take place in liquids and gases9. The path provided for flow of electric current is called:electric installationelectric pathelectric diagramelectric circuit10. What is the ability to perform work called?DeterminationEnergyForcePower11. Which of the following is more close to a black body?Black holesRed rosesGreen leavesBlackboard paint12. Electricity or electric current is theflow of energy in a wireenergy supplied to a wireflow of electrons in a wiremovement of atoms through a wire13. If the amount of heat energy received per unit area from the sun is measured on earth, mars and Jupiter, it will be ___________In increasing order Jupiter, Mars, EarthIn decreasing order Mars, Earth, JupiterThe same for allIn decreasing order Jupiter, Mars, Earth14. Heat and work arepath functionsdepend upon the path followedall of the mentionedinexact differentials15. The transfer of heat between a wall and a fluid system in motion is calledconductionnone of the mentionedradiationconvection16. black body is at 727°C. It emits energy at a rate, which is proportional to ___________(727)4(1000)4(727)2(1000)217. The process of producing energy by utilizing heat trapped inside the earth surface is called ___Wave energySolar energyHydrothermal energyGeo-Thermal energy18. Energy stored in foods and fuels is calledsound energylight energyheat energychemical energyelectrical energy19. The sound wave moves faster inairalcoholvacuumsolidwater20. Which of the following groups is all insulatorsgraphite, paper, rubberglass, plastic, paperiron, plastic, glassrubber, copper, iron21 out of 20Time is Up!
