16/12/2019 Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) 16/12/2019 0Comments by Gate Academy Welcome to your Thermal/Heat Energy (STUDY BY TOPICS JUNIOR CLASS) NAME EMAIL PHONE NUMBER 1. A swinging pendulum converts potential energy to Heat Electrical Kinetic Chemical 2. If you rub your palms together for some time, you feel warm. The action amounts to converting potential → chemical → heat energy potential → kinetic → heat energy chemical → potential → heat energy solar → chemical → mechanical → heat energy 3. The ability or capacity to do work is called force energy power strength 4. What is hot molten rock called? Volcano Magma Igneous rocks Lava 5. The transfer of heat between a wall and a fluid system in motion is called none of the mentioned radiation convection conduction 6. Heat flow into a system is taken to be ____, and heat flow out of the system is taken as ____ positive, positive positive, negative negative, negative negative, positive 7. Which of the following is more close to a black body? Red roses Blackboard paint Black holes Green leaves 8. Which of the following represents the energy in storage? internal energy heat work none of the mentioned 9. The process of producing energy by utilizing heat trapped inside the earth surface is called ___ Hydrothermal energy Geo-Thermal energy Solar energy Wave energy 10. Which of the following is the correct expression for Ohms law? I = V * R R = V/ I R = I/ V V = R/ I 11. Energy stored in foods and fuels is called heat energy electrical energy chemical energy sound energy light energy 12. Which of the following is true? latent heat of fusion is not much affected by pressure both of the mentioned latent heat of vaporization is highly sensitive to pressure none of the mentioned 13. Fuel is any material which when burnt produces heat energy sound energy light energy chemical energy 14. A pressure cooker reduces cooking time for food, because _______ Cooking involves chemical changes helped by a rise in temperature Boiling point of water involved in cooking is increased Heat is more evenly distributed in the cooking space The higher pressure inside the cooker crushes the food material 15. Which of the following is not a form of energy? Speed Sound Light Heat 16. The path provided for flow of electric current is called: electric path electric circuit electric diagram electric installation 17. The heat from a fire at one end of a closed room reaches some one at the other end of the room mainly by diffusion conduction radiation reflection 18. Flutes, trumpet and saxophone belong to musical instruments group called string instruments sound instruments percussion instruments wind instruments 19. On a cold morning, a metal surface will feel colder to touch than a wooden surface, because of ___________ Metal has low specific heat Metal has high thermal conductivity Metal has low thermal conductivity Metal has high specific heat 20. Which of the following is a stored energy in an accumulator battery cell? Heat Sound Light None of the above Electrical 1 out of 20 Time is Up! Time's up