This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The human body is heated from the within therefore it is considered ..... A) Thermal. B) Exothermic. C) Endothermic. D) Thermophile. Show Answer Correct Answer: C) Endothermic. 2. Which type of heat transfer occurs in solids? A) Conduction. B) Radiation. C) Evaporation. D) Convection. Show Answer Correct Answer: A) Conduction. 3. 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. 4. 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. 5. 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. 6. 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. 7. Warming a marshmallow OVER a campfire is an example of A) Conduction. B) Radiation. C) Global warming. D) Convection. Show Answer Correct Answer: D) Convection. 8. 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. 9. 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. 10. 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. 11. 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. 12. 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. 13. 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. 14. 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. 15. 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) 0.715 g. B) 33.6 g. C) 147 g. D) 6896 g. Show Answer Correct Answer: B) 33.6 g. 16. 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) 157 J. B) 379 J. C) 285 J. D) 202 J. Show Answer Correct Answer: D) 202 J. 17. 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. 18. 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. 19. 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. 20. 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. 21. A material that conducts heat poorly is called a(n): A) Radiator. B) Insulator. C) Conductor. D) Metal. Show Answer Correct Answer: B) Insulator. 22. An increase in the volume of a substance when the temperature increases is called ..... A) Heat. B) Thermal expansion. C) Kinetic energy. D) Temperature. Show Answer Correct Answer: B) Thermal expansion. 23. ..... tells you how hot or cold something is. A) Weight. B) Thermometer. C) Height. D) Temperature. Show Answer Correct Answer: D) Temperature. 24. The temperature of a steel rod is 330K. Its temperature $^\circ$C is ..... ( ) A) 59$^\circ$C. B) 63$^\circ$c. C) 45$^\circ$c. D) 57$^\circ$c. Show Answer Correct Answer: D) 57$^\circ$c. 25. What is the total amount of heat needed to change 2.25 kg of silver at 0.0$^\circ$C to 200.0$^\circ$C? The specific heat of silver is 0.129 J/g$^\circ$C A) 58, 050 J. B) 27, 912.5. C) All the above. D) None of the above. Show Answer Correct Answer: A) 58, 050 J. 26. How does Michael's relationship with his brother Carlos influence his actions in 'Heat'? A) Carlos is a negative influence. B) Carlos provides guidance and support. C) Carlos is indifferent to Michael's struggles. D) Carlos competes with Michael. Show Answer Correct Answer: B) Carlos provides guidance and support. 27. What is the range of clinical thermometer in degree ceisius A) 30-40. B) 35-42. C) 35-45. D) None of the above. Show Answer Correct Answer: B) 35-42. 28. Which of these is a good thermal conductor? A) Plastic. B) Wood. C) Copper. D) None of the above. Show Answer Correct Answer: C) Copper. 29. How does Michael's passion for baseball influence his relationship with his father? A) It causes tension between them. B) It strengthens their bond. C) It leads to misunderstandings. D) It has no effect on their relationship. Show Answer Correct Answer: B) It strengthens their bond. 30. Thermal energy can be measured as ..... A) Temperature. B) Sound degrees. C) Pounds. D) Money. Show Answer Correct Answer: A) Temperature. 31. When you hold your hands by a fire what type of heat transfer is warming your hands? A) Dance magic. B) Radiation. C) Convection. D) Conduction. Show Answer Correct Answer: B) Radiation. 32. What is an object that prevents, or slows down, the transfer of heat? A) Celsius. B) Insulator. C) Thermometer. D) Conductor. Show Answer Correct Answer: B) Insulator. 33. The state that matter exists in depends on its A) Weight. B) Volume. C) Temperature. D) Mass. Show Answer Correct Answer: C) Temperature. 34. Choose the formula that correctly relates density, mass and volume. A) Density = Volume x Mass. B) Mass = Density / Volume. C) Density = Mass / Volume. D) None of the above. Show Answer Correct Answer: C) Density = Mass / Volume. 35. What is an insulator of heat?(insulator = poor conductor) A) A material that slows the transfer of heat. B) A material that transfers heat easily. C) A material that is temperature controlled. D) None of the above. Show Answer Correct Answer: A) A material that slows the transfer of heat. 36. On what kind of day will ice most likely melt quickly? A) A cool, clear day. B) A hot, sunny day. C) A warm, rainy day. D) A cold, snowy day. Show Answer Correct Answer: B) A hot, sunny day. 37. When two things are the same temperature: A) Heat transfer between the two things stops. B) They have the same number of molecules. C) Their molecules stop moving. D) Their molecules move at the same average speed. Show Answer Correct Answer: D) Their molecules move at the same average speed. 38. Why would someone tell you to rub your hands together? A) To create electrical energy. B) To trap heat from the air. C) Your hands create friction, which creates heat. D) None of the above. Show Answer Correct Answer: C) Your hands create friction, which creates heat. 39. A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of ..... A) Convection. B) Radiation. C) Conduction. D) None of the above. Show Answer Correct Answer: C) Conduction. 40. If two substances have the same AVERAGE kinetic energy, then A) They have equal thermal energy. B) They have the same temperature. C) They have the same specific heat. D) None of the above. Show Answer Correct Answer: B) They have the same temperature. 41. How does energy transfer from the Sun to Earth? A) Convection. B) Conduction. C) Radiation. D) Transformation. Show Answer Correct Answer: C) Radiation. 42. (b) Evaporation takes place only from the surface of the liquid. A) FALSE. B) TRUE. C) All the above. D) None of the above. Show Answer Correct Answer: B) TRUE. 43. Chloroplast present in A) Animal cells. B) Bacteria. C) Leaf. D) None of the above. Show Answer Correct Answer: B) Bacteria. 44. Why do metal pans often have wooden handles? A) Metal heats slower than wood. B) Wood does not conduct heat as well as metal. C) Metal gets heavier as it is heated. D) Wood burns to make heat and metal does not. Show Answer Correct Answer: B) Wood does not conduct heat as well as metal. 45. What is a temperature scale with the freezing point of water at 32 degrees and the boiling point of 212 degrees? A) Thermal. B) Celsius. C) Fahrenheit. D) Confusing. Show Answer Correct Answer: C) Fahrenheit. 46. 20 g of water. specific heat of water is 4.18 J/g$^\circ$C. temperature changes from 25$^\circ$ C to 20$^\circ$ C, how much heat energy (Q) moves from the water to the surroundings? A) 418 J. B) 83 J. C) 209 J. D) 4.18 J. Show Answer Correct Answer: A) 418 J. 47. Choose the letter of the correct answer.1. What method of heat transfer requires direct contact between objects? A) Conduction. B) Sublimation. C) Radiation. D) Convection. Show Answer Correct Answer: A) Conduction. 48. Which one of these things can a thermal insulator NOT do? A) Keep warm things warm. B) Make cold things hot. C) Keep cold things cool. D) None of the above. Show Answer Correct Answer: B) Make cold things hot. 49. Water will ..... when it gets cold enough, changing it from a LIQUID to a SOLID A) Melt. B) Freeze. C) Boil. D) None of the above. Show Answer Correct Answer: B) Freeze. 50. Sound energy helps us ..... noise. A) Hear. B) See. C) Taste. D) None of the above. Show Answer Correct Answer: A) Hear. 51. Chelsea is drinking fruit juice from an aluminum can. She wants to pour the juice into a cup. Which of the following cups will most likely keep her fruit juice cold? A) Paper. B) Metal. C) Glass. D) Foam. Show Answer Correct Answer: D) Foam. 52. Which is NOT a heat source? A) Pot. B) The Sun. C) Iron. D) Oven. Show Answer Correct Answer: A) Pot. 53. How does wind transfer heat energy? A) Convection. B) Conduction. C) Radiation. D) Reflection. Show Answer Correct Answer: A) Convection. 54. A student took a snow cone outside on a hot summer day. The heat would cause what kind of change? A) A liquid becoming a gas. B) A solid becoming a gas. C) A liquid becoming a solid. D) A solid becoming a liquid. Show Answer Correct Answer: D) A solid becoming a liquid. 55. How is heat transferred in radiation? A) Through time. B) Through air. C) Through liquids. D) Through solids. Show Answer Correct Answer: B) Through air. 56. What is the energy of moving particles in matter? A) Thermal energy. B) Temperature. C) Chemical change. D) Heat. Show Answer Correct Answer: A) Thermal energy. 57. As a cumulonimbus cloud builds, warm air at the Earth's surface rises and cold air sinks downward. What heat transfer process is occuring here? A) Radiation. B) Conduction. C) Convection. D) Thermal energy. Show Answer Correct Answer: C) Convection. 58. The hotness of an object is determined by its ..... A) Volume. B) Pressure. C) Both a and b. D) Temperature. Show Answer Correct Answer: D) Temperature. 59. The transfer of heat through a liquid or gas is called A) Convection. B) Conduction. C) Solar. D) Radiation. Show Answer Correct Answer: A) Convection. 60. How many degrees does the earth turn in 4 mins? A) 1 degree. B) 4 degrees. C) 3 degrees. D) 2 degrees. Show Answer Correct Answer: A) 1 degree. ← PreviousNext →Related QuizzesScience QuizzesClass 7 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books