This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What happens to the mercury (liquid) in a thermometer when it is hot? A) It explodes. B) It expands. C) It contracts. D) It disappears. Show Answer Correct Answer: B) It expands. 2. What is the SI unit of temperature? A) Fahrenheit. B) Kelvin. C) Celsius. D) Joule. Show Answer Correct Answer: B) Kelvin. 3. CONVECTION IS POSSIBLE IN ..... A) SOLIDS. B) LIQUIDS. C) GASES. D) LIQUIDS & GASES. Show Answer Correct Answer: D) LIQUIDS & GASES. 4. Convection= A) Physical contact. B) Warm air rising. C) Heat moving through empty space. D) Say what?. Show Answer Correct Answer: B) Warm air rising. 5. Harry is going on a bike ride and notices that parts of the bike are hot. What could be the way that the heat traveled to make this happen? A) From the sun to Harry. B) From Harry to the bike. C) From the sun to the bike. D) From the bike to Harry. Show Answer Correct Answer: C) From the sun to the bike. 6. Which thermal exchange process does not require a medium? A) Conduction. B) Convection. C) Radiation. D) Evaporation. Show Answer Correct Answer: C) Radiation. 7. Which best describes the process of convection? A) Convection is the primary way heat travels through rays. B) Convection is the primary way heat travels through metals. C) Convection is the primary way heat travels through appliances. D) Convection is the primary way heat travels through liquids and gasses. Show Answer Correct Answer: D) Convection is the primary way heat travels through liquids and gasses. 8. An entire lake is heated by water from a hot spring at the bottom of the lake. What method of heat transfer is it? A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 9. Which one of these plants lies in the frigid zone? A) Coconut tree. B) Mosses. C) Rose. D) Neem. Show Answer Correct Answer: B) Mosses. 10. A family living on the top floor of a tall building complains that their home get too hot during the day. Which could they add to the roof to allow their home to stay cooler? A) Black metal. B) White metal. C) Black rubber. D) White rubber. Show Answer Correct Answer: D) White rubber. 11. A light bulb feeling warm comes from which type of heat source? A) Electricity. B) Friction. C) Sunlight. D) Mixing things together-chemical change. Show Answer Correct Answer: A) Electricity. 12. Which statement best describes how winter weather can damage roads? A) Snow and ice can cause car accidents, which damage roads. B) Rain, ice, and snow can cause the painted lines on roads to fade. C) Cold temperatures can cause road materials to expand, creating potholes. D) Water can get into cracks in roads, then freeze and expand, making the cracks worse. Show Answer Correct Answer: D) Water can get into cracks in roads, then freeze and expand, making the cracks worse. 13. What is NOT an example of an insulator in the kitchen? A) An about my. B) Pots and pans. C) A wooden spoon. D) A plastic measuring cup. Show Answer Correct Answer: B) Pots and pans. 14. Heat energy transfer from low temperature objects to high temperature objects A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. What is the use of kink in a thermometer A) It raises the mercury level. B) It prevents mercury level from falling on its own. C) It makes the thermometer beautiful. D) It acts as a joint to the glass tube that is used for mercury and the scale. Show Answer Correct Answer: B) It prevents mercury level from falling on its own. 16. The ..... air from the land moves towards the sea to complete the cycle. A) Cold air. B) Hot air. C) Warm air. D) Oxygen. Show Answer Correct Answer: C) Warm air. 17. Dark colored surfaces ..... radiation A) Reflect. B) Absorb. C) All the above. D) None of the above. Show Answer Correct Answer: B) Absorb. 18. Which of the following is a surface phenomenon A) Evaporation. B) Boiling. C) Condensation. D) All. Show Answer Correct Answer: A) Evaporation. 19. CLINICAL THERMOMETER IS USED TO MEASURE THE TEMPERATURE OF ..... A) HUMAN BODY. B) TREES. C) CHEMICALS. D) NONE. Show Answer Correct Answer: A) HUMAN BODY. 20. Liquid convert to gas at constant temperature is A) Melting. B) Boiling. C) Evaporation. D) Freezing. Show Answer Correct Answer: B) Boiling. 21. Sun tanning is an example of ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 22. Heat passes from ..... A) High to low. B) Cold to hot. C) Hot to cold. D) Heat cannot be passed. Show Answer Correct Answer: C) Hot to cold. 23. What is the velocity of light in which heat travels? A) 3*108m/sec. B) 2*108m/sec. C) 3*109m/sec. D) 2*109m/sec. Show Answer Correct Answer: A) 3*108m/sec. 24. 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 A, it has a lower specific heat. B) Object B, 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: B) Object B, it has a lower specific heat. 25. 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. ← 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 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 10Class 7 Science Chapter 3 Heat Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books