This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Heat moves from ..... to ..... A) Cold to hot. B) Hot to cold. C) All the above. D) None of the above. Show Answer Correct Answer: B) Hot to cold. 2. Choose the correct type of heat transfer:ocean currents A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Convection. 3. While stirring hot coffee a spoon becomes warm; the spoon gets hot due to A) Radiation. B) Conduction. C) Convection. D) Insulation. Show Answer Correct Answer: B) Conduction. 4. When water from a lake evaporates ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 5. The type of energy which causes in us the sensation of hotness or coldness is called ..... A) Chemical energy. B) Heat energy. C) Magnetic energy. D) Light energy. Show Answer Correct Answer: B) Heat energy. 6. What are the three methods of heat transfer? A) Reflection, absorption, transmission. B) Evaporation, sublimation, deposition. C) Diffusion, osmosis, filtration. D) Conduction, convection, and radiation. Show Answer Correct Answer: D) Conduction, convection, and radiation. 7. Which is the source of heat that is caused when objects rapidly rub against each other? A) Electricity. B) Sunlight. C) Friction. D) Mixing things together-chemical change. Show Answer Correct Answer: C) Friction. 8. The occurrence of breeze is a manifestation of what method of heat transfer? A) Radiation. B) Thermal expansin. C) Convection. D) Conduction. Show Answer Correct Answer: C) Convection. 9. The change from solid to a gas is called ..... A) Sublimation. B) Condensation. C) Evaporation. D) Freezing. Show Answer Correct Answer: A) Sublimation. 10. The amount of energy required to raise the temperature 1$^\circ$C for every kilogram is called ..... ? A) Temperature. B) Specific Heat. C) Thermal Energy. D) Kinetic Energy. Show Answer Correct Answer: B) Specific Heat. 11. What is radiation? A) The transfer of heat in gases. B) The transfer of heat that does not require a medium. C) The transfer of heat in solids. D) The transfer of heat in liquids. Show Answer Correct Answer: B) The transfer of heat that does not require a medium. 12. To change from a liquid to a gas A) Melt. B) Condensate. C) Change. D) Evaporate. Show Answer Correct Answer: D) Evaporate. 13. Energy that does NOT need a medium to transfer heat is called ..... A) Convection. B) Conduction. C) Reflection. D) Radiation. Show Answer Correct Answer: D) Radiation. 14. One litre of water at 30$^\circ$C is mixed with one litre of water at 50$^\circ$C. The temperature of the mixture will be A) 80$^\circ$C. B) More than 50$^\circ$C but less than 80$^\circ$C. C) 20$^\circ$C. D) Between 30$^\circ$C and 50$^\circ$C. Show Answer Correct Answer: D) Between 30$^\circ$C and 50$^\circ$C. 15. If we add a lump of ice to a tumbler containing water, ..... A) Heat flows from ice to water. B) Heat flows from water to ice. C) Heat flows from ice to water if ice is more in quantity. D) Heat flows from water to ice if water is more in quantity. Show Answer Correct Answer: B) Heat flows from water to ice. 16. This is the transfer of thermal energy from a warmer object to a cooler object. A) Thermal energy. B) Heat. C) Kinetic energy. D) Temperature. Show Answer Correct Answer: B) Heat. 17. The gas law Pvr= constant, is true for A) Thermal changes only. B) Adiabatic changes only. C) Both isothermal and adiabatic changes. D) Isothermal changes only. Show Answer Correct Answer: B) Adiabatic changes only. 18. We can see the ball because ..... A) They reflect heat into our eyes. B) They reflect light into our ears. C) They reflect light into our eyes. D) They do nothing. Show Answer Correct Answer: C) They reflect light into our eyes. 19. Which of the following materials can be used to make electric wires? A) Nylon. B) Plastics. C) Copper. D) Rubber. Show Answer Correct Answer: C) Copper. 20. Heat energy can be transferred A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. How can the use of cool roofs help in reducing urban heat islands? A) By reflecting more sunlight and absorbing less heat compared to traditional roofs. B) By increasing the amount of heat absorbed by traditional roofs. C) By reflecting less sunlight compared to traditional roofs. D) By increasing the amount of heat absorbed by cool roofs. Show Answer Correct Answer: A) By reflecting more sunlight and absorbing less heat compared to traditional roofs. 22. What is the definition of heat? A) The temperature of something above 5 degrees Fahrenheit. B) A long hot pepper you eat. C) In Science, heat is energy that moves from warmer objects to cooler objects. D) None of the above. Show Answer Correct Answer: C) In Science, heat is energy that moves from warmer objects to cooler objects. 23. THERE ARE TWO BEAKERS WITH HOT AND COLD WATER.THE TEMPERATURE OF HOT WATER IS 60$^{o}$c and the that of cold water is 10$^{O }$C.WHEN WATER IN TWO BEAKERS IS MIXED IN THIRD BEAKER.THEN THE TEMP.OF THIRD BEAKER WILL BE A) BETWEEN 10 TO 60$^{o}$C. B) MORE THAN 30$^{o }$BUT LESS THAN 40$^{o}$C. C) LESS THAN 30$^{o}$C BUT MORE THAN 40$^{o}$C. D) NONE OF THE ABOVE. Show Answer Correct Answer: B) MORE THAN 30$^{o }$BUT LESS THAN 40$^{o}$C. 24. Steve knows that heat can transfer between two substances. For example, a warm bowl of soup can warm a metal spoon. Which of the following must be present for heat to flow from one substance to another? A) One of the substances must always be a liquid. B) The substances must be at the same temperature. C) The substances must be at different temperatures. D) One of the substances must always be a solid. Show Answer Correct Answer: C) The substances must be at different temperatures. 25. No medium is required for transfer of heat by the process of ..... A) Radiation. B) Conduction. C) Convection. D) None of the above. Show Answer Correct Answer: A) Radiation. 26. What is the significance of the title 'Heat' in the context of the novel? A) It refers to the summer season. B) It symbolizes the pressure and challenges faced by the protagonist. C) It is the name of the baseball team. D) It represents the warmth of family relationships. Show Answer Correct Answer: B) It symbolizes the pressure and challenges faced by the protagonist. 27. Hot water rising as cooler water sinks is an example of A) Sublimation. B) Conduction. C) Convection. D) Radiation. Show Answer Correct Answer: C) Convection. 28. What is the transfer of heat by movement of liquids or gases? A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 29. If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL ..... A) One reaches a temperature of zero. B) They both have an equal temperature. C) One runs out of energy. D) None of the above. Show Answer Correct Answer: B) They both have an equal temperature. 30. Which of the following is NOT a cause of urban heat islands? A) Presence of large bodies of water. B) Low levels of air pollution. C) High population density. D) Lack of vegetation. Show Answer Correct Answer: A) Presence of large bodies of water. 31. Which is more likely to have higher temperatures due to the urban heat island effect? A) Commercial area. B) City (downtown). C) Rural area. D) Residential. Show Answer Correct Answer: B) City (downtown). 32. Which object is a conductor of heat? A) Metal nail. B) A rubber band. C) A tree. D) None of the above. Show Answer Correct Answer: A) Metal nail. 33. Which of the following statements about thermal energy is true? A) As you hold a cup of hot water your hands cool the water. B) As you hold a glass of cold milk, the cold travels to your hand. C) As you hold a cup of cold milk, your hand cools the milk. D) As you hold a cup of hot water, the heat moves to your hand. Show Answer Correct Answer: D) As you hold a cup of hot water, the heat moves to your hand. 34. The students in Miss Zunz's class are learning about how different forms of energy are used. They make a chart as shown below.Electric energy:computer, freezer Heat energy:? Energy of motion:roller coaster, swing set Which of these best completes the students' chart? A) Campfire, stove. B) Drum, trombone. C) Boiling water, pinwheel. D) Light bulb, fan. Show Answer Correct Answer: A) Campfire, stove. 35. Heat exchanger is an equipment used to transfer heat from the hot fluid to cold fluid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 36. Miranda wraps her hands around a mug of hot tea. The heat from the hot tea is being transferred to Miranda's hands primarily by A) Convection. B) Absorption. C) Radiation. D) Conduction. Show Answer Correct Answer: D) Conduction. 37. What is a substance that reduces the transfer of thermal energy? A) A conductor. B) Metal. C) Insulation. D) Cheese. Show Answer Correct Answer: C) Insulation. 38. The meridians of longitude divide the earth into heat zones. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 39. Which of the follow materials conducts heat well? A) Metal. B) Glass. C) Wood. D) Plastic. Show Answer Correct Answer: A) Metal. 40. In convection, WARM air A) Rises. B) Sinks. C) All the above. D) None of the above. Show Answer Correct Answer: A) Rises. 41. Which of the following is NOT a type of heat exchanger? A) Recovery. B) Regenerator. C) Mixer. D) None of the above. Show Answer Correct Answer: D) None of the above. 42. No more energy can be removed from matter at: A) Absolute zero. B) Its freezing point. C) 0$^\circ$C. D) 273 K. Show Answer Correct Answer: A) Absolute zero. 43. A student is mixing a cup of hot chocolate with a spoon. How is the heat transferred between the hot chocolate and the part of the spoon that is in the hot chocolate? A) Convection transfers energy from the spoon to the hot chocolate. B) Conduction transfers energy from the spoon to the hot chocolate. C) Convection transfers energy from the hot chocolate to the spoon. D) Conduction transfers energy from the hot chocolate to the spoon. Show Answer Correct Answer: D) Conduction transfers energy from the hot chocolate to the spoon. 44. What is the primary source of energy for the Earth? A) Wind power. B) Natural gas. C) The sun. D) Coal. Show Answer Correct Answer: C) The sun. 45. Heat travels from the sun to the earth by the process of ..... A) Convection. B) Insulation. C) Conduction. D) Radiation. Show Answer Correct Answer: D) Radiation. 46. Heating a pan on a stove A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Conduction. 47. LABORATORY THERMOMETER- ..... A) LABORATORY PURPOSES. B) FOR HUMAN BODY. C) All the above. D) None of the above. Show Answer Correct Answer: A) LABORATORY PURPOSES. 48. Match this definition to the proper word. related to heat or temperature A) Thermal. B) Therm. C) Exothermic. D) Thermostat. Show Answer Correct Answer: A) Thermal. 49. Density of water is maximum at ..... A) 0$^\circ$C. B) 4$^\circ$C. C) 0$^\circ$C to 4$^\circ$C. D) Above 4$^\circ$C. Show Answer Correct Answer: B) 4$^\circ$C. 50. A device used to measure temperature A) Hamamamometer. B) Barometer. C) Blabometer. D) Thermometer. Show Answer Correct Answer: D) Thermometer. 51. In an exothermic process, the surroundings are gaining energy. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 52. What letter is used to represent specific heat capacity? A) C. B) P. C) T. D) H. Show Answer Correct Answer: A) C. 53. What instrument might a nurse used to check the temperature (heat) of a patient? A) Thermopiles. B) Thermostat. C) Thermograph. D) Thermometer. Show Answer Correct Answer: D) Thermometer. 54. The normal temperature of human body is A) 37$^\circ$C. B) 35$^\circ$C. C) 43$^\circ$C. D) 40 $^\circ$C. Show Answer Correct Answer: A) 37$^\circ$C. 55. The way heat moves in liquids and gases is called ..... A) Temperature. B) Convection. C) Conduction. D) Radiation. Show Answer Correct Answer: B) Convection. 56. Thermal energy ALWAYS moves from ..... to ..... A) Ice to water. B) Solid to liquid. C) Solid to gas. D) Hot to cold. Show Answer Correct Answer: D) Hot to cold. 57. Heating up soup on the stove (HINT:the soup) A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Convection. 58. This is the only form of heat transfer that does not require matter. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 59. Melting means solid converts to A) Liquid. B) Gas. C) Both. D) None. Show Answer Correct Answer: A) Liquid. 60. What method of heat transfer does not require a medium? A) Radiation. B) Dispersion. C) Conduction. D) Convection. Show Answer Correct Answer: A) Radiation. 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