This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. 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. 3. Everything has heat A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. When heat is removed from liquid, which change is likely to occur? A) Melting. B) Condensation. C) Evaporation. D) Freezing. Show Answer Correct Answer: D) Freezing. 5. 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. 6. Which of the following is the most important energy source for our planet? A) The sun. B) Stove burner. C) Our planet. D) Wind currents. Show Answer Correct Answer: A) The sun. 7. 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. 8. Which most often occurs when a pot of water boils? A) Condensation. B) Freezing. C) Melting. D) Evaporation. Show Answer Correct Answer: D) Evaporation. 9. Which best explains why the handles of many cooking pans are made of plastic? A) Plastic melts easily. B) Plastic freezes easily. C) Plastic is a poor conductor of heat. D) Plastic is a good conductor of heat. Show Answer Correct Answer: C) Plastic is a poor conductor of heat. 10. In how many ways does heat move around the universe? A) One. B) Three. C) Two. D) Ten. Show Answer Correct Answer: B) Three. 11. The biggest source of heat for our planet is the ..... A) Earth. B) Fire. C) Moon. D) Sun. Show Answer Correct Answer: D) Sun. 12. 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. 13. What is NOT a source of heat? A) Rubbing something together quickly. B) The sun. C) Electricity. D) Sweating. Show Answer Correct Answer: D) Sweating. 14. You burn your hand by touching a hot stove. A) Conduction. B) Convection. C) Radiation. D) Temperature. Show Answer Correct Answer: A) Conduction. 15. 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. 16. 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. 17. The liquid metal used in thermometer is A) Mercury. B) Silver. C) Gold. D) Copper. Show Answer Correct Answer: A) Mercury. 18. 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. 19. ..... is the type of heat transfer that occurs in fluids, such as warm air rising and cold air sinking; creating wind. A) Convection. B) Conduction. C) Radiation. D) Insulation. Show Answer Correct Answer: A) Convection. 20. 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. 21. Which is an example of radiation? A) Boiling a pot of noodles for dinner. B) Getting hot from lying in the sun. C) Feeling warm while taking a shower. D) Burning yourself after touching a hot plate. Show Answer Correct Answer: B) Getting hot from lying in the sun. 22. 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. 23. 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. 24. The process by which heat is transferred from the hotter end to the colder end of an object ( solids ) A) Convection. B) Insulator. C) Transpiration. D) Conduction. Show Answer Correct Answer: D) Conduction. 25. 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. ← PreviousNext →Related 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 8Class 7 Science Chapter 3 Heat Quiz 9Class 7 Science Chapter 3 Heat Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books