This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The transfer of energy by electromagnetic waves. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 2. In the winter, Carl's dad wraps their pipes in insulating foam to keep the water from freezing. How does the insulation foam help? A) It helps pull cold energy out of the pipes. B) It helps pull heat energy out of the pipes. C) It helps keep heat energy in the pipes. D) It helps keeps cold energy in the pipes. Show Answer Correct Answer: C) It helps keep heat energy in the pipes. 3. In heat transfer, heat always flows from the ..... ? ..... substance to the ..... ? ..... substance. A) Hotter to colder. B) Colder to hotter. C) Hotter to hotter. D) Colder to colder. Show Answer Correct Answer: A) Hotter to colder. 4. Heat is measured in? A) Newton. B) Pascal. C) Joule. D) Bar. Show Answer Correct Answer: C) Joule. 5. Paheli and Boojho measured their body temperature. Paheli found hers to be 98.6$^\circ$F and Boojho recorded 37$^\circ$C. Which of the following statements is true? A) Paheli has a higher body temperature than Boojho. B) Paheli has a lower body temperature than Boojho. C) Both have normal body temperature. D) Both are suffering from fever. Show Answer Correct Answer: C) Both have normal body temperature. 6. Heat energy traveling through space is an example of ..... A) Convection. B) Density. C) Radiation. D) Conduction. Show Answer Correct Answer: C) Radiation. 7. NUTRITIONISTS MEASURE ENERGY IN UNITS CALLED? A) Joules. B) Calories. C) Kilocalories. D) Carbs. Show Answer Correct Answer: B) Calories. 8. As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting. A) Heat causes the molecules to expanded and forces them apart. B) Heat removes thermal energy from the ice cube and causes it to become liquid water. C) Adding energy causes the bonds between the hydrogen and oxygen in the ice cube to break. D) The transfer of thermal energy to the ice cube causes its molecules to move faster. Show Answer Correct Answer: D) The transfer of thermal energy to the ice cube causes its molecules to move faster. 9. Only the torrid zone gets direct rays from the sun. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Total amount of thermal energy in an object depends on A) Temperature and number of particles. B) Temperature. C) The object's specific heat. D) The number of particles. Show Answer Correct Answer: A) Temperature and number of particles. 11. Heat describes ..... A) The temperature of an object. B) The total energy of all the particles within an object. C) The sunburn from the sun. D) Boiling water. Show Answer Correct Answer: B) The total energy of all the particles within an object. 12. Match the definition to the proper word.Requires heat top be absorbed from outside the body. A) Thermostat. B) Thermopiles. C) Endothermic. D) Exothermic. Show Answer Correct Answer: D) Exothermic. 13. Normal human body temperature is A) 42 degree Celsius. B) 37 degree Celsius. C) 32 degree Celsius. D) 98 degree Fahrenheit. Show Answer Correct Answer: B) 37 degree Celsius. 14. Conduction= A) Physical contact. B) Warm air rising. C) Heat moving through empty space. D) Say what?. Show Answer Correct Answer: A) Physical contact. 15. To make ice you need to ..... A) Add heat. B) Take heat away. C) Wait for the winter. D) None of the above. Show Answer Correct Answer: B) Take heat away. 16. Bob is putting new water pipes in his house. Which material would be best for Bob to use to prevent his pipes from freezing? A) Aluminum. B) Copper. C) Plastic. D) Steel. Show Answer Correct Answer: C) Plastic. 17. What is the measurement of the average kinetic energy of a substance? (a) A) Kinetic energy. B) A. Temperature. C) Thermal energy. D) Potential energy. Show Answer Correct Answer: B) A. Temperature. 18. If you roast a marshmallow over a fire using a metal rod, it might burn your hand because ..... A) The metal conducts heat well. B) The metal radiates heat. C) The metal makes heat when held tightly. D) The metal makes electricity when heated. Show Answer Correct Answer: A) The metal conducts heat well. 19. If temperature rises by $20^0$ A) 273. B) 293. C) 253. D) 20. Show Answer Correct Answer: D) 20. 20. When two bodies are at thermal equilibrium then choose the correct option A) They will have same temperature. B) Transfer of heat will not take place. C) Molecules in both bodies will have same average linear K.E. D) May have same internal energy. Show Answer Correct Answer: B) Transfer of heat will not take place. 21. The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called its: A) Specific heat. B) Heat transfer. C) Change of state. D) Melting point. Show Answer Correct Answer: A) Specific heat. 22. THE HEAT FLOWS FROM A BODY AT ..... TEMPERATURE TO ..... TEMPERATURE? A) HIGHER, LOWER. B) HIGHER, HIGHER. C) LOWER, HIGHER. D) LOWER, LOWER. Show Answer Correct Answer: A) HIGHER, LOWER. 23. All of the following are examples of heat created by electricity EXCECPT A) Oven. B) Piano. C) Clothes iron. D) Computer. Show Answer Correct Answer: B) Piano. 24. Ironing a shirt is an example of ..... A) Condensation. B) Conduction. C) Convection. D) Radiation. Show Answer Correct Answer: B) Conduction. 25. How does the air move in a sea breeze? A) Wind moves from north to south. B) Wind moves from ocean to the land. C) Wind moves from the land to the ocean. D) Wind moves from south to north. Show Answer Correct Answer: B) Wind moves from ocean to the land. ← 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