This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. You are doing your homework at a desk that is underneath a lamp. You start to feel hotter because of ..... ? ..... from the lamp. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 2. Which is most responsible for the uneven heating of the air in the atmosphere? A) Radiation. B) Convection. C) Conduction. D) Condensation. Show Answer Correct Answer: B) Convection. 3. What tool is used to measure temperature? A) A ruler. B) A scale. C) A compass. D) A thermometer. Show Answer Correct Answer: D) A thermometer. 4. Which of these is a measure of how hot or cold something is? A) Temperature. B) Radiation. C) Insulation. D) Friction. Show Answer Correct Answer: A) Temperature. 5. Which type of heat transfer occurs through direct contact between objects? A) Evaporation. B) Radiation. C) Conduction. D) Convection. Show Answer Correct Answer: C) Conduction. 6. Which gives off both light and heat? A) Fire. B) Moonlight. C) Boiling water. D) Electric blanket. Show Answer Correct Answer: A) Fire. 7. A student is cooking an egg in a pan on a stovetop. What is the main method of heat transfer between the pan and the egg? A) Convection. B) Conduction. C) Radiation. D) Entropy. Show Answer Correct Answer: B) Conduction. 8. A dark-colored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person? A) Radiation. B) Conduction. C) Convection. D) Insultation. Show Answer Correct Answer: A) Radiation. 9. The specific heat is the amount of energy needed to raise the temperature one degree Celsius of a substance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. At room temperature water is a liquid. How could the water be changed to a solid? A) Add heat. B) Remove heat. C) Decrease density. D) Increase density. Show Answer Correct Answer: B) Remove heat. 11. When you heat a pot on a stove, the handle gets warm. Which type of heat transfer is responsible? A) Conduction. B) Radiation. C) Convection. D) All of the above. Show Answer Correct Answer: A) Conduction. 12. What will happen to ice if you leave it out in the room? A) It will melt. B) It will stay the same. C) It will freeze. D) None of the above. Show Answer Correct Answer: A) It will melt. 13. The faster the molecules move, the ..... the object is. A) Warmer. B) Cooler. C) All the above. D) None of the above. Show Answer Correct Answer: A) Warmer. 14. The presence of water vapour molecules in air is A) Dew. B) Humidity. C) Fog. D) Condensation. Show Answer Correct Answer: B) Humidity. 15. Butter melts in your mouth. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 16. When a gas or liquid heat up, what happens? A) Molecules are closer together, become less dense, and rise. B) Molecules are spread out, become less dense, and rise. C) Molecules are closer together, become denser, and rise. D) None of the above. Show Answer Correct Answer: B) Molecules are spread out, become less dense, and rise. 17. Andy puts on a pair of mittens and his winter coat. He goes outside to play in the snow. Which of the following explains why his hands stay warm? A) The gloves are good insulators that trap heat. B) The heat flows quickly from the mitten to the snow. C) The gloves are good conductors that trap heat. D) The heat flows quickly from the snow through the mitten. Show Answer Correct Answer: A) The gloves are good insulators that trap heat. 18. Instrument that can be used to measure how hot or cold an object is ..... A) Heater. B) Stop watch. C) Thermometer. D) None of the above. Show Answer Correct Answer: C) Thermometer. 19. A system consists of an ice cube floating in a glass of water. The entire system is at 0 $^{o}$C. Thermal energy is then added slowly to the system, causing half of the ice to melt. What can be said about the resulting temperature of the system? A) Greater than 0 $^{o}$C. B) Less than 0 $^{o}$C. C) Equal to 0 $^{o}$C. D) Equal to 100 $^{o}$C. Show Answer Correct Answer: C) Equal to 0 $^{o}$C. 20. Which material would NOT make a good baking pan (for high temperatures in the oven)? A) Aluminum. B) Plastic. C) Steel. D) Glass. Show Answer Correct Answer: B) Plastic. 21. The liquid metal used in a thermometer ..... A) Is able to expand uniformly for all temperatures. B) Is transparent and easy to see. C) Is opaque and difficult to read. D) Is able to expand uniformly for certain temperatures. Show Answer Correct Answer: A) Is able to expand uniformly for all temperatures. 22. Which is the best example of radiation? A) Warming hot dogs over a fire. B) Boiling water on a stove-top burner. C) Burning a piece of paper with a candle flame. D) None of the above. Show Answer Correct Answer: A) Warming hot dogs over a fire. 23. Think about a pan of water sitting on an electric stove. The stove is then turned on to high. How is heat transferred from the stove to the pan? A) Conduction. B) Convection. C) Radiation. D) Temperature. Show Answer Correct Answer: A) Conduction. 24. ..... , convection, and conduction are the three types of heat transfer. A) Conveyance. B) Radiation. C) Translocation. D) None of the above. Show Answer Correct Answer: B) Radiation. 25. Which of the following is not an example of convection A) Cool breeze coming off the ocean. B) Water boiling when you make Mac & Cheese. C) A fireplace heating up a room. D) Lighting a candle. Show Answer Correct Answer: D) Lighting a candle. ← 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 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