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. The process of producing energy by utilizing heat trapped inside the earth surface is called ___Wave energyGeo-Thermal energySolar energyHydrothermal energy2. Energy has different forms which includeall of the mentionedworknone of the mentionedheat3. The energy conversions in a hydroelectric power supply isheat → kinetic → mechanical → electricalnone of the abovepotential → kinetic → mechanical → electricalsound → kinetic → mechanical → electrical4. Heat current is maximum in which of the following?Steel and copperSteelCopperCopper and steel5. How much is the average temperature at depth of 10 km of earth surface?200°C20°C900°C650°C6. 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 onlylight and heat energies onlyheat energy onlylight energy only7. When a torch is used to light up a dark room what energy conversions are likely to take place?Electrical to chemicalElectrical to lightElectrical to heatChemical to light8. What is hot molten rock called?MagmaLavaIgneous rocksVolcano9. Which of the following types of energy can be present in molecules?all of the mentionedelectronic energy and vibrational energytranslational and rotational kinetic energychemical energy and nuclear energy10. Which of the following groups is all insulatorsiron, plastic, glassrubber, copper, ironglass, plastic, papergraphite, paper, rubber11. Which of the following is more close to a black body?Green leavesBlack holesBlackboard paintRed roses12. If you rub your palms together for some time, you feel warm. The action amounts to convertingpotential → chemical → heat energychemical → potential → heat energysolar → chemical → mechanical → heat energypotential → kinetic → heat energy13. 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 Jupiter, Mars, EarthIn decreasing order Mars, Earth, JupiterThe same for allIn increasing order Jupiter, Mars, Earth14. Flutes, trumpet and saxophone belong to musical instruments group calledpercussion instrumentsstring instrumentssound instrumentswind instruments15. Ratio of the amount of heat radiation, transmitted through the body to the amount of heat radiation incident on it, is known as _________InductanceAbsorbanceConductanceTransmittance16. A device which produces electricity with the aid of heat is calledThermometerThermostatWindmillThermocouple17. In a vacuum, heat can travel by:radiation onlyconduction onlyradiation and convectionconvection only18. Which of the statements is NOT true?none of the aboveconvection can take place in liquids and gasesconduction is the only means of heat transfer in solidsconvection process requires a material medium19. black body is at 727°C. It emits energy at a rate, which is proportional to ___________(1000)4(727)2(1000)2(727)420. Which of the following represents the energy in storage?none of the mentionedworkinternal energyheat21 out of 20Time is Up! Time's up
