This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 37 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The ..... zone lies just north of the Arctic Circle. A) North temperate zone. B) North frigid zone. C) South frigid zone. D) None of the above. Show Answer Correct Answer: B) North frigid zone. 2. One end of a metal rod is placed over a flame during an investigation. A thermometer is touching the opposite end of the metal rod. Which BEST describes what is happening during this investigation? A) Convection carries heat to the thermometer. B) Radiant energy warms the thermometer. C) Mechanical energy from the flame carries heat to the thermometer. D) Heat from the flame is conducted through the metal rod to the thermometer. Show Answer Correct Answer: D) Heat from the flame is conducted through the metal rod to the thermometer. 3. Boiling water, a fire, a lava lamp and a cool sea breeze are examples of what type of heat transfer? A) Convection. B) Conduction. C) Solar. D) Radiation. Show Answer Correct Answer: A) Convection. 4. What is the main mode of heat transfer in liquids? A) Convection. B) Evaporation. C) Conduction. D) Radiation. Show Answer Correct Answer: A) Convection. 5. What is the purpose of using baffles in shell-and-tube heat exchangers? A) To enhance heat transfer. B) To maintain uniform spacing between tubes. C) Both. D) None. Show Answer Correct Answer: C) Both. 6. Which of these is the best heat conductor? A) Metal pan. B) Rubber glove. C) Cloth pot holder. D) A block of wood. Show Answer Correct Answer: A) Metal pan. 7. One degree Celsius rise in temperature is equal to ..... A) 1 degree rise on the Kelvin scale. B) 1 degree rise on the Fahrenheit scale. C) Both (a) and (b). D) 1 degree fall on the Kelvin scale. Show Answer Correct Answer: A) 1 degree rise on the Kelvin scale. 8. ..... THERMOMETERS RANGE IS 35$^{0}$C TO 42$^{0}$. A) LABORATORY. B) MAXIMUM AND MINIMUM. C) CLINICAL. D) ALL. Show Answer Correct Answer: C) CLINICAL. 9. What is the scientific definition of temperature? A) Temperature is how hot or cold something is. B) Temperature in Celsius. C) Temperature in Fahrenheit. D) Temperature is the speed of the molecules in an object. Show Answer Correct Answer: D) Temperature is the speed of the molecules in an object. 10. Give an example of radiation. A) Microwaves from a microwave oven. B) Ultraviolet light from the sun. C) X-rays from a medical imaging machine. D) Infrared radiation from a heater. Show Answer Correct Answer: B) Ultraviolet light from the sun. 11. What is the symbol for Thermal Energy (heat)? A) Q. B) T. C) M. D) Cp. Show Answer Correct Answer: A) Q. 12. THE TRANSFER OF HEAT FROM HOT BODY TO COLD BODY DIRECTLY WITHOUT HEATING THE SPACE IN BETWEEN IS KNOWN AS A) CONDUCTION. B) CONVECTION. C) RADIATION. D) NONE OF THESE. Show Answer Correct Answer: C) RADIATION. 13. What tool do we use to measure temperature? A) Thermometer. B) Scale. C) Calculator. D) Ruler. Show Answer Correct Answer: A) Thermometer. 14. True or False:A thermal conductor transfers heat well between two objects, and the heat does not stay in one place. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. How does heat transfer impact climate change? A) Heat transfer leads to cooling of the Earth's atmosphere. B) Heat transfer impacts climate change by influencing the distribution of energy in the Earth's atmosphere and oceans, leading to global warming and its associated effects. C) Climate change is solely caused by natural factors. D) Heat transfer has no impact on climate change. Show Answer Correct Answer: B) Heat transfer impacts climate change by influencing the distribution of energy in the Earth's atmosphere and oceans, leading to global warming and its associated effects. 16. Hot air rising from a campfire is ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 17. For a skillet, used for cooking, do you want a high or low specific heat A) High, so that it will need more energy to heat up. B) Low, so that it will change temperature quickly. C) All the above. D) None of the above. Show Answer Correct Answer: B) Low, so that it will change temperature quickly. 18. Which thermometer is used to measure temperature of an object? A) Clinical thermometer. B) Laboratory thermometer. C) Maximum minimum thermometer. D) None of the above. Show Answer Correct Answer: B) Laboratory thermometer. 19. A measure of the AVERAGE kinetic energy of particles in an object is called A) Thermal energy. B) Conduction. C) Convection. D) Temperature. Show Answer Correct Answer: D) Temperature. 20. An air conditioner cools a room. The cool air sinks and the warmer air rises. This is an example of A) Radiation. B) Conduction. C) Convection. D) Constipation. Show Answer Correct Answer: C) Convection. 21. 1kg of water cools from 100C to 20C. What is true A) It gives out 336 kJ. B) It gives out 336 J of energy. C) It takes in 336 kJ. D) It takes in 336 J. E) It doesn't take in or give out any energy. Show Answer Correct Answer: A) It gives out 336 kJ. 22. The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 $^\circ$C to 35.0 $^\circ$C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal? A) 1.17 J/g$^\circ$C. B) -1.17 J/g$^\circ$C. C) 0.857 J/g$^\circ$C. D) -0.857 J/g$^\circ$C. Show Answer Correct Answer: A) 1.17 J/g$^\circ$C. 23. Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ..... A) Thermal energy. B) Specific heat. C) Thermal expansion. D) Conductors. Show Answer Correct Answer: C) Thermal expansion. 24. The heat from a lamp allows this lizard to remain warm. This is an example of which type of heat transfer? A) Radiation. B) Convection. C) Conduction. D) None of the above. Show Answer Correct Answer: A) Radiation. 25. "Thermal" stands for- A) Energy. B) Expans. C) Temperature. D) Heat. Show Answer Correct Answer: D) Heat. ← 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