This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How does the setting of the Bronx contribute to the story in 'Heat'? A) It provides a challenging environment for the characters. B) It is a peaceful and quiet place. C) It has no significant impact on the story. D) It is a place of wealth and luxury. Show Answer Correct Answer: A) It provides a challenging environment for the characters. 2. The flow of energy from an object at a higher temperature to an object at a lower temperature. A) Heat. B) Temperature. C) Radiation. D) Conduction. Show Answer Correct Answer: A) Heat. 3. The human body is heated from the within therefore it is considered ..... A) Exothermic. B) Endothermic. C) Thermal. D) Thermophile. Show Answer Correct Answer: B) Endothermic. 4. Which type of heat transfer occurs in solids? A) Radiation. B) Evaporation. C) Convection. D) Conduction. Show Answer Correct Answer: D) Conduction. 5. Which of the following is an example of heat transfer through conduction? A) A metal spoon getting hot from its handle when placed in a pot of boiling water. B) The sun warming your face on a sunny day. C) Warm air rising to the ceiling in a heated room. D) A microwave heating food. Show Answer Correct Answer: A) A metal spoon getting hot from its handle when placed in a pot of boiling water. 6. If an object has particles that are moving very slowly, the object's temperature is probably ..... A) Hot. B) Small. C) Cold. D) Big. Show Answer Correct Answer: C) Cold. 7. What is the relationship between urban heat islands and climate change? A) Urban heat islands are caused by climate change. B) Urban heat islands are not affected by climate change. C) Urban heat islands can help mitigate climate change. D) Urban heat islands can be worsened by climate change. Show Answer Correct Answer: D) Urban heat islands can be worsened by climate change. 8. Which one among the following waves are called waves of heat energy? A) Microwaves. B) Radio waves. C) Ultraviolet waves. D) None of the above. Show Answer Correct Answer: D) None of the above. 9. Warming a marshmallow OVER a campfire is an example of A) Radiation. B) Convection. C) Conduction. D) Global warming. Show Answer Correct Answer: B) Convection. 10. Vibrational motion is A) Rotation on its own axis. B) Vibration on its own axis. C) Moving to and fro. D) Stationary. Show Answer Correct Answer: B) Vibration on its own axis. 11. Is iron a conductor or insulator? A) Conductor. B) Insulator. C) All the above. D) None of the above. Show Answer Correct Answer: A) Conductor. 12. Which one among the following denotes the smallest temperature? A) 1$^\circ$ on the Celsius scale. B) All of them are equal. C) 1$^\circ$ on the Fahrenheit scale. D) 1$^\circ$ on the Kelvin scale. Show Answer Correct Answer: D) 1$^\circ$ on the Kelvin scale. 13. Heat moves by ..... when it travels from one solid to another solid. A) Radiation. B) Convection. C) Thermal energy. D) Conduction. Show Answer Correct Answer: D) Conduction. 14. Which is an example of convection A) The heat coming from a campfire. B) A spoon in a bowl of soup becoming warmer. C) Warmer water at the surface of swimming pool. D) None of the above. Show Answer Correct Answer: C) Warmer water at the surface of swimming pool. 15. Amaeya is suffering from cold and chillness, Her mother wants to test, whether she is having fever or not.Which thermometer she can use? A) Laboratory thermometer. B) Clinical thermometer. C) Maximum and minimum thermometer. D) Thermoflask. Show Answer Correct Answer: B) Clinical thermometer. 16. Heat is tranferred from ..... areas to ..... areas. A) Warmer, cooler. B) Cooler to warmer. C) All the above. D) None of the above. Show Answer Correct Answer: A) Warmer, cooler. 17. You need 70.2 J to raise the temperature of an unknown mass of ammonia, NH$_{3}$(g), from 23.0$^\circ$C to 24.0$^\circ$C. If the specific heat of ammonia is 2.09 J/g$^\circ$C, calculate the unknown mass of ammonia. A) 147 g. B) 6896 g. C) 0.715 g. D) 33.6 g. Show Answer Correct Answer: D) 33.6 g. 18. How much energy would be absorbed as heat by 75 g of iron (specific heat 0.449 J/gK) when heated from 295 K to 301 K? A) 202 J. B) 157 J. C) 285 J. D) 379 J. Show Answer Correct Answer: A) 202 J. 19. Which best explains why a hot air balloon rises into the air? A) As the air is cooled, it becomes more dense and the balloon rises. B) As the air is cooled, it becomes less dense and the balloon rises. C) As the air is heated, it becomes less dense and the balloon rises. D) None of the above. Show Answer Correct Answer: C) As the air is heated, it becomes less dense and the balloon rises. 20. Which is NOT a good conductor of heat? A) Steel. B) Iron. C) Air. D) None of the above. Show Answer Correct Answer: C) Air. 21. Specific heat of water is 4.18 J/g$^\circ$C. Specific heat of wood is 1.760 J/g$^\circ$C What material needs more heat energy to raise the temperature? A) Water. B) Wood. C) Both are same. D) None of the above. Show Answer Correct Answer: A) Water. 22. How does radiation differ from conduction and convection? A) Radiation only occurs in liquids. B) Radiation requires direct contact between objects. C) Radiation does not require a medium to transfer heat. D) Radiation is slower than conduction and convection. Show Answer Correct Answer: C) Radiation does not require a medium to transfer heat. 23. A material that conducts heat poorly is called a(n): A) Insulator. B) Conductor. C) Metal. D) Radiator. Show Answer Correct Answer: A) Insulator. 24. An increase in the volume of a substance when the temperature increases is called ..... A) Kinetic energy. B) Thermal expansion. C) Temperature. D) Heat. Show Answer Correct Answer: B) Thermal expansion. 25. ..... tells you how hot or cold something is. A) Temperature. B) Weight. C) Height. D) Thermometer. Show Answer Correct Answer: A) Temperature. ← 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