This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 1 (25 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) Conduction. B) Convection. C) Radiation. D) Insulation. Show Answer Correct Answer: A) 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) Magnetic energy. C) Light energy. D) Heat energy. Show Answer Correct Answer: D) 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) Friction. C) Sunlight. D) Mixing things together-chemical change. Show Answer Correct Answer: B) Friction. 8. The occurrence of breeze is a manifestation of what method of heat transfer? A) Convection. B) Conduction. C) Radiation. D) Thermal expansin. Show Answer Correct Answer: A) Convection. 9. The change from solid to a gas is called ..... A) Sublimation. B) Freezing. C) Evaporation. D) Condensation. 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) Thermal Energy. B) Specific Heat. C) Temperature. D) Kinetic Energy. Show Answer Correct Answer: B) Specific Heat. 11. What is radiation? A) The transfer of heat in liquids. B) The transfer of heat that does not require a medium. C) The transfer of heat in solids. D) The transfer of heat in gases. 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) Condensate. B) Evaporate. C) Change. D) Melt. Show Answer Correct Answer: B) Evaporate. 13. Energy that does NOT need a medium to transfer heat is called ..... A) Radiation. B) Conduction. C) Convection. D) Reflection. Show Answer Correct Answer: A) 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 water to ice. B) Heat flows from ice to water. C) Heat flows from water to ice if water is more in quantity. D) Heat flows from ice to water if ice is more in quantity. Show Answer Correct Answer: A) Heat flows from water to ice. 16. This is the transfer of thermal energy from a warmer object to a cooler object. A) Temperature. B) Kinetic energy. C) Heat. D) Thermal energy. Show Answer Correct Answer: C) 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 light into our eyes. B) They reflect heat into our eyes. C) They reflect light into our ears. D) They do nothing. Show Answer Correct Answer: A) They reflect light into our eyes. 19. Which of the following materials can be used to make electric wires? A) Plastics. B) Nylon. 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 solid. B) One of the substances must always be a liquid. C) The substances must be at different temperatures. D) The substances must be at the same temperature. 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. Next →Related QuizzesClass 7 Science Chapter 3 Heat Quiz 2Class 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 9Class 7 Science Chapter 3 Heat Quiz 10Class 7 Science Chapter 3 Heat Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books