This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Heat is the movement of ..... A) Radiation. B) Thermal energy. C) Cold. D) Fire. Show Answer Correct Answer: B) Thermal energy. 2. What is the energy of the movement of particles in a substance? A) Kinetic energy. B) Thermal energy. C) Temperature. D) Potential energy. Show Answer Correct Answer: A) Kinetic energy. 3. The sidewalk burns your bare feet in the summer time. A) Transformation. B) Radiation. C) Convection. D) Conduction. Show Answer Correct Answer: D) Conduction. 4. ..... heat is needed if we want to increase the temperature. A) More. B) Less. C) Little. D) None of the above. Show Answer Correct Answer: A) More. 5. True or FalseFriction is when objects are rubbed together to create heat A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Warming yourself by a fire A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 7. A wooden spoon is dipped in a cup of ice cream. Its other end: A) C) becomes cold by the process of radiation. B) (a) becomes cold by the process of conduction. C) (b) becomes cold by the process of convection. D) (d) does not become cold. Show Answer Correct Answer: D) (d) does not become cold. 8. ..... IS USED AS A THERMOMETER FLUID A) MERCURY. B) HYDROGEN. C) OXYGEN. D) HELIUM. Show Answer Correct Answer: A) MERCURY. 9. If I have 2 blocks of Aluminium (one of 1kg and one of 10 kg) and heat them up with 6, 000 Joules of energy.Which one will have the SMALLEST change in temperature? A) 1 kg. B) 10 kg. C) They both heat up to the same temperature. D) It depends on the temperature of the room. Show Answer Correct Answer: B) 10 kg. 10. A fireplace warming the air in the room is and example of this type of heat transfer? A) Radiation. B) Conduction. C) Transformation. D) Convection. Show Answer Correct Answer: D) Convection. 11. Electromagnetic waves through empty space A) Convection. B) Radiation. C) Conduction. D) Magic. Show Answer Correct Answer: B) Radiation. 12. Rate of evaporation depends on A) Surface area. B) Temperature. C) Vapour already present. D) All the above. Show Answer Correct Answer: D) All the above. 13. Which statement about thermal energy is true? A) Thermal energy is the transfer of heat energy from one object to another that are at different temperatures. B) Thermal energy is the sum of the potential and kinetic energy of a substance. C) Thermal energy is total potential energy of a substance. D) Thermal energy is the total amount of heat energy that can be transferred in an object. Show Answer Correct Answer: B) Thermal energy is the sum of the potential and kinetic energy of a substance. 14. Object that gives off heat is called ..... of heat. A) Sources. B) Places. C) Things. D) None of the above. Show Answer Correct Answer: A) Sources. 15. Clothing keeps you warm because clothing acts as what? A) A thermometer. B) A conductor. C) Friction. D) An insulator. Show Answer Correct Answer: D) An insulator. 16. Maximum heat transfer rate could be achieved in ..... flow. A) Laminar. B) Counter-currrent. C) Co-current. D) None. Show Answer Correct Answer: B) Counter-currrent. 17. The enthalpy of dry saturated steam ..... with the increase in pressure A) Decreases. B) Increases. C) Remains constant. D) All of thr above. Show Answer Correct Answer: A) Decreases. 18. When ice melts its temperature A) Cannot say. B) Increases. C) Decreases. D) Remains constant. Show Answer Correct Answer: D) Remains constant. 19. What is the transfer of heat by direct contact? A) Radiation. B) Conduction. C) Convection. D) None of the above. Show Answer Correct Answer: B) Conduction. 20. Glass, steel, and aluminum are good examples of ..... A) Conductors. B) Radiation. C) Thermal energy. D) Insulators. Show Answer Correct Answer: A) Conductors. 21. Heat is a form of energy which flows from a ..... when they are kept in contact. A) Cold body to a hot body. B) Hot body to a cold body. C) Cold body to a cold body. D) Hot body to a hot body. Show Answer Correct Answer: B) Hot body to a cold body. 22. Increasing the temperature of a substance A) Makes the molecules move more slowly. B) Increases the kinetic energy. C) Increases its specific heat. D) Increases the potential energy. Show Answer Correct Answer: B) Increases the kinetic energy. 23. What would happen to the pressure of a gas which is heated at constant volume? A) Its pressure would remain same. B) Its pressure would increase. C) Its pressure would decrease. D) None of the above. Show Answer Correct Answer: B) Its pressure would increase. 24. Which is NOT a way heat is produced? A) Mixing chemicals. B) Friction. C) Burning. D) Temperature. Show Answer Correct Answer: D) Temperature. 25. If ..... if transferred from object A to object B, the temperature of object A decreases A) Cold. B) Heat. C) All the above. D) None of the above. Show Answer Correct Answer: B) Heat. 26. Why does an ice cube melt when dropped into hot liquid? A) Heat from the liquid transfers to the ice. B) Heat from the ice transfers to the liquid. C) The liquid absorbs heat from the ice. D) Cold from the ice transfers into the liquid. Show Answer Correct Answer: A) Heat from the liquid transfers to the ice. 27. How do you calculate $\Delta$T? A) T$_{final}$-T $_{end}$. B) T$_{initial }$-T$_{start}$. C) T$_{final }$-T$_{initial}$. D) T$_{initial}$-T$_{final}$. Show Answer Correct Answer: C) T$_{final }$-T$_{initial}$. 28. What happens when you rub your hands together? A) You create a conductor. B) You create friction. C) You create a cool sound. D) You create a chemical reaction. Show Answer Correct Answer: B) You create friction. 29. The type of heat transfer that occurs when heated air or water rises to the top of denser, cooler air or water. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 30. Energy= ..... to the speed of light squared A) Gravity. B) Sandwich. C) Mass. D) Lighting. Show Answer Correct Answer: C) Mass. 31. The temperature of a substance increases as ..... A) The substance expands. B) The average kinetic energy of its particles increases. C) The substance's volume increases. D) The substance's mass increases. Show Answer Correct Answer: B) The average kinetic energy of its particles increases. 32. Arnold wants to keep his hot cocoa warm as he travels to Ms. Frizzle's class. Which of the following items would be BEST at keeping his drink warm? A) Metal. B) Styrofoam. C) Paper Napkins. D) Aluminum Foil. Show Answer Correct Answer: B) Styrofoam. 33. Plastic is a ..... conductor of heat. A) Poor. B) Bad. C) All the above. D) None of the above. Show Answer Correct Answer: A) Poor. 34. What is the main mode of heat transfer in metals? A) Absorption. B) Conduction. C) Radiation. D) Convection. Show Answer Correct Answer: B) Conduction. 35. Which of the following expands only in volume when heated? A) Solid. B) Liquid. C) Gas. D) Both (b) and (c). Show Answer Correct Answer: C) Gas. 36. The flow of thermal energy from warmer objects to cooler objects is called ..... A) Movement. B) Heat. C) Energy. D) Friction. Show Answer Correct Answer: B) Heat. 37. The change from liquid to solid is called ..... A) Melting. B) Condensation. C) Evaporation. D) Freezing. Show Answer Correct Answer: D) Freezing. 38. The liquid in the thermometer rises when it is placed in the hot water because ..... A) It gains heat from the hot water and expands. B) Loses heat from the hot water and contracts. C) The surrounding air is too warm. D) The liquid is boiling. Show Answer Correct Answer: A) It gains heat from the hot water and expands. 39. What kind of heat transfer occurs between two objects that are touching when the particles in those objects collide with each other? A) Radiation. B) Conduction. C) Reflection. D) Convection. Show Answer Correct Answer: B) Conduction. 40. What happens to the mercury (liquid) in a thermometer when it is hot? A) It explodes. B) It expands. C) It contracts. D) It disappears. Show Answer Correct Answer: B) It expands. 41. What is the SI unit of temperature? A) Joule. B) Celsius. C) Fahrenheit. D) Kelvin. Show Answer Correct Answer: D) Kelvin. 42. CONVECTION IS POSSIBLE IN ..... A) GASES. B) LIQUIDS & GASES. C) LIQUIDS. D) SOLIDS. Show Answer Correct Answer: B) LIQUIDS & GASES. 43. Which of the following is a good conductor of heat? A) Iron. B) Aluminium. C) Steel. D) All of these. Show Answer Correct Answer: D) All of these. 44. Harry is going on a bike ride and notices that parts of the bike are hot. What could be the way that the heat traveled to make this happen? A) From the bike to Harry. B) From the sun to the bike. C) From the sun to Harry. D) From Harry to the bike. Show Answer Correct Answer: B) From the sun to the bike. 45. Which thermal exchange process does not require a medium? A) Conduction. B) Convection. C) Radiation. D) Evaporation. Show Answer Correct Answer: C) Radiation. 46. Which best describes the process of convection? A) Convection is the primary way heat travels through rays. B) Convection is the primary way heat travels through metals. C) Convection is the primary way heat travels through appliances. D) Convection is the primary way heat travels through liquids and gasses. Show Answer Correct Answer: D) Convection is the primary way heat travels through liquids and gasses. 47. An entire lake is heated by water from a hot spring at the bottom of the lake. What method of heat transfer is it? A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 48. Which one of these plants lies in the frigid zone? A) Coconut tree. B) Rose. C) Mosses. D) Neem. Show Answer Correct Answer: C) Mosses. 49. A family living on the top floor of a tall building complains that their home get too hot during the day. Which could they add to the roof to allow their home to stay cooler? A) Black metal. B) Black rubber. C) White rubber. D) White metal. Show Answer Correct Answer: C) White rubber. 50. A light bulb feeling warm comes from which type of heat source? A) Friction. B) Electricity. C) Sunlight. D) Mixing things together-chemical change. Show Answer Correct Answer: B) Electricity. 51. Which statement best describes how winter weather can damage roads? A) Snow and ice can cause car accidents, which damage roads. B) Rain, ice, and snow can cause the painted lines on roads to fade. C) Cold temperatures can cause road materials to expand, creating potholes. D) Water can get into cracks in roads, then freeze and expand, making the cracks worse. Show Answer Correct Answer: D) Water can get into cracks in roads, then freeze and expand, making the cracks worse. 52. What is NOT an example of an insulator in the kitchen? A) An about my. B) Pots and pans. C) A wooden spoon. D) A plastic measuring cup. Show Answer Correct Answer: B) Pots and pans. 53. Heat energy transfer from low temperature objects to high temperature objects A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 54. What is the use of kink in a thermometer A) It raises the mercury level. B) It prevents mercury level from falling on its own. C) It makes the thermometer beautiful. D) It acts as a joint to the glass tube that is used for mercury and the scale. Show Answer Correct Answer: B) It prevents mercury level from falling on its own. 55. The ..... air from the land moves towards the sea to complete the cycle. A) Oxygen. B) Hot air. C) Cold air. D) Warm air. Show Answer Correct Answer: D) Warm air. 56. Dark colored surfaces ..... radiation A) Reflect. B) Absorb. C) All the above. D) None of the above. Show Answer Correct Answer: B) Absorb. 57. Which of the following is a surface phenomenon A) Evaporation. B) Boiling. C) Condensation. D) All. Show Answer Correct Answer: A) Evaporation. 58. CLINICAL THERMOMETER IS USED TO MEASURE THE TEMPERATURE OF ..... A) HUMAN BODY. B) TREES. C) CHEMICALS. D) NONE. Show Answer Correct Answer: A) HUMAN BODY. 59. Liquid convert to gas at constant temperature is A) Boiling. B) Evaporation. C) Freezing. D) Melting. Show Answer Correct Answer: A) Boiling. 60. Sun tanning is an example of ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. ← PreviousNext →Related QuizzesScience QuizzesClass 7 QuizzesClass 7 Science Chapter 3 Heat Quiz 1Class 7 Science Chapter 3 Heat Quiz 3Class 7 Science Chapter 3 Heat Quiz 4Class 7 Science Chapter 3 Heat Quiz 5Class 7 Science Chapter 3 Heat Quiz 6Class 7 Science Chapter 3 Heat Quiz 7Class 7 Science Chapter 3 Heat Quiz 8Class 7 Science Chapter 3 Heat Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books