Welcome to your Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. The transfer of heat between a wall and a fluid system in motion is called radiation none of the mentioned conduction convection2. If you rub your palms together for some time, you feel warm. The action amounts to converting chemical → potential → heat energy potential → kinetic → heat energy potential → chemical → heat energy solar → chemical → mechanical → heat energy3. If the amount of heat energy received per unit area from the sun is measured on earth, mars and Jupiter, it will be ___________ The same for all In decreasing order Jupiter, Mars, Earth In decreasing order Mars, Earth, Jupiter In increasing order Jupiter, Mars, Earth4. What type of energy is contained in a body at rest? Heat Electrical Potential Kinetic5. The sound wave moves faster in alcohol vacuum water air solid6. The ability or capacity to do work is called power strength energy force7. Which of the following is a stored energy in an accumulator battery cell? Sound Electrical Heat None of the above Light8. The transfer of heat between two bodies in direct contact is called convection conduction radiation none of the mentioned9. Heat transfer and work transfer are energy in the transit energy interactions all of the mentioned boundary phenomena10. On a cold morning, a metal surface will feel colder to touch than a wooden surface, because of ___________ Metal has high thermal conductivity Metal has low specific heat Metal has high specific heat Metal has low thermal conductivity11. Which of the following is not a form of energy? Speed Sound Heat Light12. Woollen clothes keep the body warm because of wool ___________ Is a bad conductor Decreases the temperature Increases the temperature of body Has no effect13. A school boy riding a bicycle is converting Chemical to mechanical to kinetic energies None of the above Mechanical to kinetic energies Electrical to mechanical to kinetic energies14. Heat and work are depend upon the path followed inexact differentials path functions all of the mentioned15. 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 ___________ Equal to the temperature of the body Has no change Less than the temperature of the body Greater than the temperature of the body16. When a torch is used to light up a dark room what energy conversions are likely to take place? Electrical to light Chemical to light Electrical to chemical Electrical to heat17. Which of the following is the correct expression for Ohms law? R = I/ V V = R/ I R = V/ I I = V * R18. Energy stored in foods and fuels is called electrical energy chemical energy sound energy heat energy light energy19. Flutes, trumpet and saxophone belong to musical instruments group called percussion instruments string instruments wind instruments sound instruments20. The energy conversions in a hydroelectric power supply is sound → kinetic → mechanical → electrical heat → kinetic → mechanical → electrical none of the above potential → kinetic → mechanical → electrical21 out of 20Time is Up!
