This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Paheli Wants To Know That Is It Possible To Construct Building Which Are Not Affected By Heat? A) Wooden bricks are used in the building. B) Hollow bricks are used for making building. C) White colored cement bricks are used in building. D) Building made by soil. Show Answer Correct Answer: B) Hollow bricks are used for making building. 2. HEAT IS A ..... QUANTITY A) SCALER. B) VECTOR. C) All the above. D) None of the above. Show Answer Correct Answer: A) SCALER. 3. The SI unit of Heat is A) Watt. B) Calories. C) Joules. D) None of the above. Show Answer Correct Answer: C) Joules. 4. All of the following are sources of heat EXCEPT ..... A) Electricity. B) Sunlight. C) Fire. D) Friction. Show Answer Correct Answer: C) Fire. 5. (c) All molecules of a liquid take part in the process of evaporation A) FALSE. B) TRUE. C) All the above. D) None of the above. Show Answer Correct Answer: A) FALSE. 6. A chair is placed several feet from a fireplace. The fireplace has a glass screen. The side of the chair facing the fireplace gets warm because of A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 7. J of energy are added to a sample of iron and the temperature of the sample increases by 22.36$^{o}$C. What must be the mass of this iron sample? (C$_{Fe}$ =.4494 J/g * $^{o}$C) A) 35.21g. B) 65.34 g. C) 89.36 g. D) 48, thirst. Show Answer Correct Answer: B) 65.34 g. 8. Which would make the best roof material for a miniature solar oven used to cook meat? A) Paper. B) Cement. C) Wood. D) Glass. Show Answer Correct Answer: D) Glass. 9. You are in science class and want to see if the hot plates were used recently. You place your hand near the side of the hot plate. Without touching the hot plate, your hand feels warmer. Heat is transferred to your hand by ..... ? ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 10. The amount of heat energy required to raise the temperature of one kilogram of water by one degree celsius from 14.5 to 15.5 degree celsius is A) Calorie. B) Newton meter. C) Pascal. D) Kilocalorie. Show Answer Correct Answer: D) Kilocalorie. 11. On a sunny day, what would most likely happen to the temperature of a lake's water? A) The temperature would not change from morning to afternoon. B) The temperature would go down from morning to afternoon. C) The temperature would go up from morning to afternoon. D) The temperature would go up and down all day long. Show Answer Correct Answer: C) The temperature would go up from morning to afternoon. 12. What is the definition of CONVECTION A) When heat transfers through waves. B) When heat transfers from objects that are touching. C) A hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks. D) Heat traveling from the sun. Show Answer Correct Answer: C) A hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks. 13. What type of heat transfer happens in liquids and gases? A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 14. What is the role of insulation in preventing heat loss? A) Insulation has no effect on preventing heat loss. B) Insulation reduces heat transfer by trapping air pockets. C) Insulation absorbs heat and releases it slowly. D) Insulation increases heat transfer by conducting heat efficiently. Show Answer Correct Answer: B) Insulation reduces heat transfer by trapping air pockets. 15. Physical effects of heat are not A) Change in temperature. B) Change of state. C) Thermal expansion. D) Solvent action of water. Show Answer Correct Answer: D) Solvent action of water. 16. Emily has a cup of hot cocoa on the counter to cool off so she can drink it safely. She watches the steam rise from the hot cocoa. Which type of thermal energy transfer is occurring as the steam rises into the surrounding air? A) Conduction. B) Convection. C) Transformation. D) Radiation. Show Answer Correct Answer: B) Convection. 17. What kind of heat transfer happens when the sun is heating your body? A) Conduction. B) Density. C) Radiation. D) Convection. Show Answer Correct Answer: C) Radiation. 18. While on a camping trip, Mackenzie and her family sat around the campfire. Even after the fire had been put out, Mackenzie could feel that the air above the rocks surrounding the campfire was warm. Which best explains how the heat was transferred? A) From the rocks to the fire to the air. B) From the fire to the rocks to the air. C) From the air to the fire to the rocks. D) From the rocks to the air to the fire. Show Answer Correct Answer: B) From the fire to the rocks to the air. 19. Latent heat of vaporization of water is ..... A) 440 cal/gm. B) 340 cal/gm. C) 640 cal/gm. D) 540 cal/gm. Show Answer Correct Answer: D) 540 cal/gm. 20. What type of heat transfer occurs when eggs cook in a hot pan? A) Convection. B) Radiation. C) Conduction. D) None of the above. Show Answer Correct Answer: C) Conduction. 21. Provide an example of convection. A) Boiling water in a pot. B) Lightning during a storm. C) Circulation of warm air rising and cool air sinking. D) A car engine running. Show Answer Correct Answer: C) Circulation of warm air rising and cool air sinking. 22. A given volume of alcohol and the same volume of water is heated from the room temperature to the same temperature then A) Alcohol expands more than water. B) Alcohol contracts, but water expands. C) Water contracts, but alcohol expands. D) Water expands more than alcohol. Show Answer Correct Answer: A) Alcohol expands more than water. 23. Everything has heat A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. When heat is removed from liquid, which change is likely to occur? A) Evaporation. B) Freezing. C) Melting. D) Condensation. Show Answer Correct Answer: B) Freezing. 25. True or FalseFire is an example of burning A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 26. Which of the following is the most important energy source for our planet? A) Wind currents. B) Our planet. C) The sun. D) Stove burner. Show Answer Correct Answer: C) The sun. 27. Two spas are heated. One has more water than the other. Which will have more heat energy? A) More water. B) Less water. C) All the above. D) None of the above. Show Answer Correct Answer: B) Less water. 28. Heat from the sun reaches to us by A) RADITION. B) CONDUCTION. C) CONVECTION. D) ALL OF THESE. Show Answer Correct Answer: A) RADITION. 29. Which most often occurs when a pot of water boils? A) Melting. B) Evaporation. C) Freezing. D) Condensation. Show Answer Correct Answer: B) Evaporation. 30. Which best explains why the handles of many cooking pans are made of plastic? A) Plastic is a poor conductor of heat. B) Plastic freezes easily. C) Plastic melts easily. D) Plastic is a good conductor of heat. Show Answer Correct Answer: A) Plastic is a poor conductor of heat. 31. In how many ways does heat move around the universe? A) Ten. B) Two. C) One. D) Three. Show Answer Correct Answer: D) Three. 32. The biggest source of heat for our planet is the ..... A) Sun. B) Earth. C) Fire. D) Moon. Show Answer Correct Answer: A) Sun. 33. What is the range of a clinical thermometer in C$^\circ$? A) 35$^\circ$C to 42$^\circ$C. B) 35$^\circ$C to 45$^\circ$C. C) 32$^\circ$C to 42$^\circ$C. D) None of the above. Show Answer Correct Answer: A) 35$^\circ$C to 42$^\circ$C. 34. What is NOT a source of heat? A) Sweating. B) Electricity. C) Rubbing something together quickly. D) The sun. Show Answer Correct Answer: A) Sweating. 35. You burn your hand by touching a hot stove. A) Temperature. B) Convection. C) Radiation. D) Conduction. Show Answer Correct Answer: D) Conduction. 36. Heat flows from a region of high temperature to a region of low temperature. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 37. The temperature of a gas does not drop in an adiabatic process A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 38. The liquid metal used in thermometer is A) Copper. B) Silver. C) Mercury. D) Gold. Show Answer Correct Answer: C) Mercury. 39. What happens when Acetone is poured on your palm? A) The particles gain energy from acetone and evaporate. B) The particles gain energy from the surroundings and evaporate. C) The particles gain energy from the palm and evaporate. D) The particles gain energy from the Palm or Surroundings and evaporate. Show Answer Correct Answer: D) The particles gain energy from the Palm or Surroundings and evaporate. 40. ..... is the type of heat transfer that occurs in fluids, such as warm air rising and cold air sinking; creating wind. A) Conduction. B) Insulation. C) Radiation. D) Convection. Show Answer Correct Answer: D) Convection. 41. Handles on metal pans are often coated with plastic. What is the most likely reason for this? A) Plastic is a good conductor of heat. B) Metal is a poor conductor of heat. C) Plastic is a poor conductor of heat. D) Metal and plastic are good conductors of heat. Show Answer Correct Answer: C) Plastic is a poor conductor of heat. 42. The direction of flow of heat is always from ..... A) Hotter body to cooler body. B) Cooler body to hotter body. C) Always from body at lower temperature to a body at higher temperature. D) All of the above. Show Answer Correct Answer: A) Hotter body to cooler body. 43. As most substances are cooled, they expand. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 44. The process by which heat is transferred from the hotter end to the colder end of an object ( solids ) A) Conduction. B) Transpiration. C) Insulator. D) Convection. Show Answer Correct Answer: A) Conduction. 45. The Earth's largest heat source is the ..... A) Moon. B) Stars. C) Sun. D) None of the above. Show Answer Correct Answer: C) Sun. 46. Sarah is stirring her hot chocolate with a metal spoon, and she notices that the spoon is getting hot. This is most likely caused by which type of heat? A) Radiation. B) Insulation. C) Convection. D) Conduction. Show Answer Correct Answer: D) Conduction. 47. Two liquids combining to make the temperature rise is which type of heat source? A) Mixing things together-chemical change. B) Sunlight. C) Friction. D) Electricty. Show Answer Correct Answer: A) Mixing things together-chemical change. 48. A student is cooking some bacon in a pan. What transfer of heat is occurring? A) Friction. B) Insulation. C) Temperature. D) Conduction. Show Answer Correct Answer: D) Conduction. 49. The tool used to measure temperature is called a/an A) Thermometer. B) Conductor. C) Radiation. D) Insulator. Show Answer Correct Answer: A) Thermometer. 50. What is the unit of heat? A) Metre. B) Joule. C) Celcius degree. D) Pascal. Show Answer Correct Answer: B) Joule. 51. The heat from the oven reflects on the metal pan heating it up, the brownies touching the heated metal pan bakes the brownies through ..... A) Radiation. B) Convection. C) Conduction. D) None of the above. Show Answer Correct Answer: C) Conduction. 52. Dark coloured clothes absorb more heat. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 53. The sun warms your skin on a cold day. A) Temperature. B) Convection. C) Radiation. D) Conduction. Show Answer Correct Answer: C) Radiation. 54. Cooking a pancake on a griddle A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. 55. An ideal gas as compared to a real gas at very high pressure occupies ..... A) More volume. B) Less volume. C) Same volume. D) None of the above. Show Answer Correct Answer: A) More volume. 56. A bimetallic strip made from brass and invar bends when heated. When it's bent, the object has ..... A) Brass on the outside and invar on the inside. B) Invar on the outside and brass on the inside. C) Brass and invar of the same length. D) Brass on the outside for a while and then invar will take its place. Show Answer Correct Answer: A) Brass on the outside and invar on the inside. 57. The change in state from liquid to gas is called A) Deposition. B) Sublimation. C) Vaporization. D) Condensation. Show Answer Correct Answer: C) Vaporization. 58. What happens when something loses heat? A) It becomes hotter. B) It becomes colder. C) All the above. D) None of the above. Show Answer Correct Answer: B) It becomes colder. 59. Seema is in a hurry and wants her noodles to cool down faster. She should put it on a plate made of A) Paper. B) Wood. C) Metal. D) Plastic. Show Answer Correct Answer: C) Metal. 60. Energy from the Sun reaches Earth by A) Conduction. B) Convection. C) Radiation. D) Thermal expansion. 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 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books