This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Heat passes from ..... A) Heat cannot be passed. B) Cold to hot. C) High to low. D) Hot to cold. Show Answer Correct Answer: D) Hot to cold. 2. What is the velocity of light in which heat travels? A) 2*108m/sec. B) 2*109m/sec. C) 3*109m/sec. D) 3*108m/sec. Show Answer Correct Answer: D) 3*108m/sec. 3. Object A has a specific heat of 4.45 J/g$^\circ$C and object B has a specific heat of 1.82 J/g$^\circ$C. Which object will heat up faster? A) Object B, it has a lower specific heat. B) Object A, it has a lower specific heat. C) Object A, it has a higher specific heat. D) Object B, it has a higher specific heat. Show Answer Correct Answer: A) Object B, it has a lower specific heat. 4. When a pot is touching a stove what heat transfer is happening A) Radiation. B) Conduction. C) Convection. D) None of these. Show Answer Correct Answer: B) Conduction. 5. Water can exist as a ..... , as seen in ice. A) Liquid. B) Solid. C) Gas. D) None of the above. Show Answer Correct Answer: B) Solid. 6. David is warming chocolate on the stove. How is the motion of the particles different after the temperature is increased? A) They vibrate close together. B) They move faster. C) They move slower. D) The move less freely. Show Answer Correct Answer: B) They move faster. 7. Heat always travels from ..... A) A colder place to a hotter place until both places reach the same temperature. B) A hotter place to a colder place until both places reach the same temperature. C) All the above. D) None of the above. Show Answer Correct Answer: B) A hotter place to a colder place until both places reach the same temperature. 8. What happens when something gains heat? A) It becomes hotter. B) It becomes colder. C) All the above. D) None of the above. Show Answer Correct Answer: A) It becomes hotter. 9. Which example involves heat transfer through radiation A) Heating a frying pan on a stove. B) Warm air rising. C) Sitting next to a fire. D) Adding ice to coffee. Show Answer Correct Answer: C) Sitting next to a fire. 10. In general what is the most dense form of matter? A) Solid. B) Plasmas. C) Liquid. D) Gas. Show Answer Correct Answer: A) Solid. 11. ..... occurs when warm air rises and is replaced by cooler air A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Convection. 12. A metal wire is used in a light bulb to conduct heat until it glows. Which best explains why metal is used? A) Metal heats up quickly. B) Metal conducts sunlight. C) Metal cols down slowly. D) None of the above. Show Answer Correct Answer: A) Metal heats up quickly. 13. Answering which question would help a student decide that sunlight is a source of heat energy? A) Why can rubbing two sticks together to create a fire?. B) Why does water boil in a pot on a hot stove?. C) Why do ice cubes melt in a glass of water outside?. D) Why do car tires feel warm after driving?. Show Answer Correct Answer: C) Why do ice cubes melt in a glass of water outside?. 14. Warm air rises and the cool air sinks, demonstrates this type of heat transfer? A) Radiation. B) Convection. C) Ansolationn. D) Conduction. Show Answer Correct Answer: B) Convection. 15. What are the 3 ways heat transfers? A) Passing, Throwing and sitting. B) Conduction, convection, and radiation. C) All the above. D) None of the above. Show Answer Correct Answer: B) Conduction, convection, and radiation. 16. Joe places a glass of water of hot water into the freezer. A few minutes later he removes the glass and finds that the water is now cold. Why did this happen? A) The cold from the freezer flowed into the glass of water. B) The heat moved from the glass of water to the freezer. C) The cold particles touched the glass and transferred cold to the water. D) The cold radiation from the freezer made the water colder. Show Answer Correct Answer: B) The heat moved from the glass of water to the freezer. 17. A reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction. If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius. Is the reaction endothermic or exothermic? A) Exothermic. B) Endothermic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Exothermic. 18. Which example illustrate the transfer of energy through RADIATION? A) Feeling warmth when you sit in a sunny place. B) Feeling warm air while standing in front of the blower from a heating system. C) Feeling the warmth of the bricks around a fireplace by touching them with your hand. D) Feeling warmth on the soles of your feet when you walk along the beach on a sunny day. Show Answer Correct Answer: A) Feeling warmth when you sit in a sunny place. 19. Hot chocolate is stirred with a spoon and the spoon gets hot. A) Temperature. B) Conduction. C) Convection. D) Radiation. Show Answer Correct Answer: B) Conduction. 20. If $Q=mc\Delta T$ $\Delta T$ A) $\Delta T=\frac{Q}{mc}$. B) $\Delta T=\frac{m}{Qc}$. C) $\Delta T=Qmc$. D) $\Delta T=\frac{mc}{Q}$. E) $c=\frac{Q}{m\Delta T}$. Show Answer Correct Answer: A) $\Delta T=\frac{Q}{mc}$. 21. All matter is made of ..... that are constanly moving. A) Particles or molecules. B) Convection or conduction. C) Insulators. D) Pieces of plastic. Show Answer Correct Answer: A) Particles or molecules. 22. The increase in length of a solid when heated is called ..... A) Superficial expansion. B) Thermal expansion. C) Linear expansion. D) Cubical expansion. Show Answer Correct Answer: C) Linear expansion. 23. Zeroth law of thermodynamics ..... A) Deals with conversion of mass and energy. B) Deals with reversibility and irresibility of process. C) States that if two system are both in equilibrium with a third system, they are in thermal equilibrium with each other. D) Deals with heat engines. Show Answer Correct Answer: C) States that if two system are both in equilibrium with a third system, they are in thermal equilibrium with each other. 24. Plastic does not conduct heat like many metals. Which product made from plastic best takes advantage of this characteristic? A) A bucket. B) A table. C) A hairbrush. D) A cooler. Show Answer Correct Answer: D) A cooler. 25. You are stirring a bowl of hot soup with a metal spoon. The spoon starts to feel warmer because of ..... ? ..... A) Radiation. B) Conduction. C) Convection. D) None of the above. Show Answer Correct Answer: B) Conduction. 26. A pan of water is sitting outside during a hot sunny day. The temperature of the water goes up because heat was transferred to the water by ..... A) Convection. B) Reflection. C) Radiation. D) Conduction. Show Answer Correct Answer: C) Radiation. 27. If two objects have reached the same temperature they have reached: A) A melting point. B) A boiling point. C) Thermal equilibrium. D) Specific heat. Show Answer Correct Answer: C) Thermal equilibrium. 28. Heaters and blowers heat a room by radiation. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 29. 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. 30. Which is most responsible for the uneven heating of the air in the atmosphere? A) Radiation. B) Condensation. C) Convection. D) Conduction. Show Answer Correct Answer: C) Convection. 31. What tool is used to measure temperature? A) A scale. B) A compass. C) A ruler. D) A thermometer. Show Answer Correct Answer: D) A thermometer. 32. Which of these is a measure of how hot or cold something is? A) Radiation. B) Temperature. C) Friction. D) Insulation. Show Answer Correct Answer: B) Temperature. 33. Which type of heat transfer occurs through direct contact between objects? A) Conduction. B) Evaporation. C) Radiation. D) Convection. Show Answer Correct Answer: A) Conduction. 34. Which gives off both light and heat? A) Boiling water. B) Fire. C) Moonlight. D) Electric blanket. Show Answer Correct Answer: B) Fire. 35. 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) Conduction. B) Entropy. C) Convection. D) Radiation. Show Answer Correct Answer: A) Conduction. 36. 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) Conduction. B) Radiation. C) Convection. D) Insultation. Show Answer Correct Answer: B) Radiation. 37. 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. 38. At room temperature water is a liquid. How could the water be changed to a solid? A) Remove heat. B) Increase density. C) Add heat. D) Decrease density. Show Answer Correct Answer: A) Remove heat. 39. 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. 40. 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. 41. 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. 42. The presence of water vapour molecules in air is A) Humidity. B) Condensation. C) Dew. D) Fog. Show Answer Correct Answer: A) Humidity. 43. Butter melts in your mouth. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 44. 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. 45. 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 conductors that trap heat. B) The gloves are good insulators that trap heat. C) The heat flows quickly from the mitten to the snow. D) The heat flows quickly from the snow through the mitten. Show Answer Correct Answer: B) The gloves are good insulators that trap heat. 46. 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. 47. 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) Equal to 0 $^{o}$C. B) Equal to 100 $^{o}$C. C) Less than 0 $^{o}$C. D) Greater than 0 $^{o}$C. Show Answer Correct Answer: A) Equal to 0 $^{o}$C. 48. Which material would NOT make a good baking pan (for high temperatures in the oven)? A) Plastic. B) Aluminum. C) Steel. D) Glass. Show Answer Correct Answer: A) Plastic. 49. 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. 50. 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. 51. 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) Radiation. B) Temperature. C) Conduction. D) Convection. Show Answer Correct Answer: C) Conduction. 52. ..... , 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. 53. 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. 54. Heat always flows A) FROM A COLDER OBJECT TO HOTTER OBJECT. B) FROM A HOTTER OBJECT TO COLDER OBJECT. C) BOTH THE WAYS. D) NONE OF THESE. Show Answer Correct Answer: B) FROM A HOTTER OBJECT TO COLDER OBJECT. 55. Even though the water in a bathtub is the same temperature of the water in a tea cup, the bathtub has more A) Radiation. B) Heat. C) Thermal energy. D) Convection. Show Answer Correct Answer: C) Thermal energy. 56. How many kinds of heat transfer are there? A) 1. B) 2. C) 4 or more. D) 3. Show Answer Correct Answer: D) 3. 57. Things get colder = ..... heat A) Loses. B) Gains. C) All the above. D) None of the above. Show Answer Correct Answer: A) Loses. 58. FUSION IS ALSO KNOWN AS A) BOILING. B) SOLIDIFICATION. C) MELTING. D) EVAPORATION. Show Answer Correct Answer: C) MELTING. 59. What is the primary reason that metals are good conductors of heat? A) They have a high specific heat capacity. B) They have tightly packed molecules. C) They have free electrons that transfer energy. D) They are dense materials. Show Answer Correct Answer: C) They have free electrons that transfer energy. 60. What kind of heat is happening when the sun heats your body A) Density. B) Radiation. C) Convection. D) Conduction. Show Answer Correct Answer: B) 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books