This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Tires rubbing on the street and making smoke comes from which source of heat? A) Electricity. B) Friction. C) Sunlight. D) Mixing things together-chemical change. Show Answer Correct Answer: B) Friction. 2. Which is NOT a good insulator? A) Metal. B) Plastic. C) Wood. D) Cloth. Show Answer Correct Answer: A) Metal. 3. The ..... of a liquid is the quantity of heat in joules required to convert 1 kilogram of the liquid (at its boiling point) to vapour or gas, without any change in temperature. A) Latent heat of vaporisation. B) Latent heat of fusion. C) All the above. D) None of the above. Show Answer Correct Answer: A) Latent heat of vaporisation. 4. The molecules in a solid vibrates ..... when heated. A) Slower. B) Faster. C) All the above. D) None of the above. Show Answer Correct Answer: B) Faster. 5. What are the two scales used to measure temperature? A) Bathroom and Kitchen Scales. B) Degrees and Heat. C) Hot and Cold. D) Celsius and Fahrenheit. Show Answer Correct Answer: D) Celsius and Fahrenheit. 6. Usually, the flow arrangement of two fluids in compact heat exchangers is A) Parallel flow. B) Counter flow. C) Cross flow. D) None of the above. Show Answer Correct Answer: C) Cross flow. 7. Insulation is used in the walls of a building to ..... A) Trap solar energy. B) Keep thermal energy from moving through the walls. C) Conduct thermal energy. D) Keep cold air from moving through the walls. Show Answer Correct Answer: B) Keep thermal energy from moving through the walls. 8. In which of the following modes of heat transfer, do the molecules travel from the hotter part of the body to the colder part? A) Conduction. B) Convection. C) Radiation. D) All of the three. Show Answer Correct Answer: B) Convection. 9. 1 cal = ..... j A) 4.2. B) 4. C) 0.24. D) 10$^{7}$. Show Answer Correct Answer: A) 4.2. 10. Heat moves in 3 ways:conduction, convection, and radiation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. What do you call an organism that has adapted to living in very high temperatures (heat), such as bacteria or algae. A) Thermodynamic. B) Therm. C) Thermophile. D) Endothermic. Show Answer Correct Answer: C) Thermophile. 12. The air near the ceiling in a room is warmer that the air near the floor. A) Conduction. B) Convection. C) Radiation. D) Electricity. Show Answer Correct Answer: B) Convection. 13. Warm air rises up and cool air sinks demonstrate this type of heat transfer? A) Conduction. B) Convection. C) Radiation. D) Excellure. Show Answer Correct Answer: B) Convection. 14. Water boils in a kettle. A) Convection. B) Radiation. C) Conduction. D) None of the above. Show Answer Correct Answer: A) Convection. 15. If you place a black and white cup in the sun, the black cup gets hotter because A) It reflects more light. B) It absorbs more light. C) It is made of a different material. D) It has a larger surface area. Show Answer Correct Answer: B) It absorbs more light. 16. TRUE OR FALSEThe average normal temperature of the human body is 98.6$^\circ$F. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 17. A steak being heated when in touches a hot pan A) Conduction. B) Convection. C) Radiation. D) Dinner. Show Answer Correct Answer: A) Conduction. 18. Heat is transferred from one particle of matter to another without the movement of matter itself is called A) Conduction. B) Convection. C) Radiation. D) Insulation. Show Answer Correct Answer: A) Conduction. 19. The process by which heat comes from the sun to the earth is A) Conduction. B) Convection. C) Radiation. D) Vapourisation. Show Answer Correct Answer: C) Radiation. 20. What is the process by which heat transfers from one particle of matter to another when the particles collide? A) Conduction. B) Convection. C) Expansion. D) Radiation. Show Answer Correct Answer: A) Conduction. 21. Temperature tells us ..... A) How hot or cold something is. B) How much heat is on the outside. C) What time it is. D) What to eat for lunch. Show Answer Correct Answer: A) How hot or cold something is. 22. Grace and Tyler were outisde. Grace wore a white shirt and Tyler wore a black shirt. Why did Tyler feel hotter? A) He was sitting far away from Grace. B) He was sitting closer to the ground. C) Dark colors take in the Sun's energy. D) Dark colors push away the Sun's energy. Show Answer Correct Answer: C) Dark colors take in the Sun's energy. 23. In a sea breeze, air moves from A) Land to sea. B) Sea to land. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sea to land. 24. Name the device used for measuring temperature A) Ammeter. B) Thermometer. C) Anemometer. D) None of the above. Show Answer Correct Answer: B) Thermometer. 25. What is the normal body temperature of a healthy person? A) 37$^\circ$C. B) 37$^\circ$F. C) 37$^\circ$K. D) 98.4 K. Show Answer Correct Answer: A) 37$^\circ$C. ← 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