This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. David is warming chocolate on the stove. How is the motion of the particles different after the temperature is increased? A) They move faster. B) They move slower. C) The move less freely. D) They vibrate close together. Show Answer Correct Answer: A) They move faster. 3. 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. 4. 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. 5. Which example involves heat transfer through radiation A) Sitting next to a fire. B) Adding ice to coffee. C) Heating a frying pan on a stove. D) Warm air rising. Show Answer Correct Answer: A) Sitting next to a fire. 6. In general what is the most dense form of matter? A) Solid. B) Liquid. C) Gas. D) Plasmas. Show Answer Correct Answer: A) Solid. 7. ..... 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. 8. 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. 9. Answering which question would help a student decide that sunlight is a source of heat energy? A) Why do ice cubes melt in a glass of water outside?. B) Why does water boil in a pot on a hot stove?. C) Why do car tires feel warm after driving?. D) Why can rubbing two sticks together to create a fire?. Show Answer Correct Answer: A) Why do ice cubes melt in a glass of water outside?. 10. Warm air rises and the cool air sinks, demonstrates this type of heat transfer? A) Conduction. B) Convection. C) Radiation. D) Ansolationn. Show Answer Correct Answer: B) Convection. 11. What is heat? A) Heat is all the hot bodies. B) Heat is used to measure temperature. C) Heat is the degree of hotness or coldness of a body. D) Heat is what we feel as hot or cold. Show Answer Correct Answer: C) Heat is the degree of hotness or coldness of a body. 12. 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. 13. 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. 14. 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. 15. 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. 16. Hot chocolate is stirred with a spoon and the spoon gets hot. A) Conduction. B) Convection. C) Radiation. D) Temperature. Show Answer Correct Answer: A) Conduction. 17. If $Q=mc\Delta T$ $\Delta T$ A) $\Delta T=\frac{Q}{mc}$. B) $\Delta T=\frac{mc}{Q}$. C) $\Delta T=Qmc$. D) $\Delta T=\frac{m}{Qc}$. E) $c=\frac{Q}{m\Delta T}$. Show Answer Correct Answer: A) $\Delta T=\frac{Q}{mc}$. 18. All matter is made of ..... that are constanly moving. A) Insulators. B) Particles or molecules. C) Convection or conduction. D) Pieces of plastic. Show Answer Correct Answer: B) Particles or molecules. 19. The increase in length of a solid when heated is called ..... A) Thermal expansion. B) Linear expansion. C) Superficial expansion. D) Cubical expansion. Show Answer Correct Answer: B) Linear expansion. 20. 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. 21. Plastic does not conduct heat like many metals. Which product made from plastic best takes advantage of this characteristic? A) A table. B) A cooler. C) A bucket. D) A hairbrush. Show Answer Correct Answer: B) A cooler. 22. 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. 23. 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) Radiation. B) Convection. C) Conduction. D) Reflection. Show Answer Correct Answer: A) Radiation. 24. 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. 25. 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. ← 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 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