This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which one of the following is a reliable measure of heat? A) Hotness. B) Coldness. C) Temperature. D) None of these. Show Answer Correct Answer: C) Temperature. 2. What is a heat and light source? A) Moon. B) Hot water. C) Sun. D) Water. Show Answer Correct Answer: C) Sun. 3. Jennifer is in a room that has an air temperature of 25$^\circ$C (77$^\circ$F). Before pouring cold water into a glass, she notices that the ice in the pitcher is melting. What would be the BEST way for Jennifer to describe how thermal energy is being transferred? A) Heat moves from the air into the water. B) Cold moves from the water into the room. C) Heat moves from the ice to the water. D) Cold moves from the ice into the water. Show Answer Correct Answer: A) Heat moves from the air into the water. 4. Which best explains what happens in most materials when they are heated? A) They expand. B) They contract. C) They change color. D) They double in size. Show Answer Correct Answer: A) They expand. 5. Energy is transferred as heat between two objects of ..... temperatures. A) Differing. B) Same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Differing. 6. What happens during heat loss? A) The object will expand. B) The object will contract. C) All the above. D) None of the above. Show Answer Correct Answer: B) The object will contract. 7. When wet clothes dry water in clothes A) Freeze. B) Condense. C) Boils. D) Evaporate. Show Answer Correct Answer: D) Evaporate. 8. When you touch a piece of ice with your finger, energy flows ..... A) From your finger to the ice. B) From the ice to the finger. C) Both ways. D) Energy does not flow. Show Answer Correct Answer: A) From your finger to the ice. 9. Which does NOT receive heat from the sun? A) The floor of a cave. B) A roof of a house. C) A tree's leaves. D) The water in a pool. Show Answer Correct Answer: A) The floor of a cave. 10. When particles spread apart and move faster with heat, they are ..... A) Crying. B) Melting. C) Shrinking. D) Expanding. Show Answer Correct Answer: D) Expanding. 11. A boy touches a stove and gets burned. What transfer of heat caused his hand to get burned? A) Radiation. B) Convection. C) Conduction. D) Combustion. Show Answer Correct Answer: C) Conduction. 12. Which is NOT a heat transfer by radiation? A) A bottle sitting in the sun that gets warm. B) Sitting beside of a campfire and feeling the heat. C) A pot of water heating over a hot stove. D) A person sunbathing. Show Answer Correct Answer: C) A pot of water heating over a hot stove. 13. A scientist trying to identify an unknown liquid may heat the liquid. Which would be the BEST reason for scientist to heat the liquid. A) To observe a color change. B) To collect gases for additional study. C) To identify the boiling point. D) To get rid of most impurities. Show Answer Correct Answer: C) To identify the boiling point. 14. Convection is a mode of transferring heat through ..... A) Gases. B) Solids. C) Liquids. D) Both liquids and gases. Show Answer Correct Answer: D) Both liquids and gases. 15. THE DEGREE OF HOTNESS OR COLDNESS OF A BODY IS CALLED A) TEMPERATURE. B) Kelvin. C) THERMOMETER. D) None of the above. Show Answer Correct Answer: A) TEMPERATURE. 16. An aluminum plate and a plastic plate have been in the freezer all night long. When you remove them the next morning, A) The plastic plate has a lower temperature. B) The plastic plate has a higher temperature. C) The plates have the same temperature. D) The aluminum plate has a lower temperature. Show Answer Correct Answer: C) The plates have the same temperature. 17. Jimmy is a astronaut, when he was in space he drifted close to the sun. He said that he felt the hottest he had ever felt. What kind of heat transfer caused this? A) Conduction. B) COMBUSTION. C) Convection. D) Radiation. Show Answer Correct Answer: D) Radiation. 18. WHICH OF THE FOLLOWING IS NOT A EFFECT OF HEAT A) CHANGE IN STATE. B) CHANGE IN SIZE. C) CHANGE IN TEMPRATURE. D) CHANGE IN COLOUR. Show Answer Correct Answer: D) CHANGE IN COLOUR. 19. The transfer of energy by electromagnetic waves. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 20. In the winter, Carl's dad wraps their pipes in insulating foam to keep the water from freezing. How does the insulation foam help? A) It helps pull cold energy out of the pipes. B) It helps keep heat energy in the pipes. C) It helps keeps cold energy in the pipes. D) It helps pull heat energy out of the pipes. Show Answer Correct Answer: B) It helps keep heat energy in the pipes. 21. In heat transfer, heat always flows from the ..... ? ..... substance to the ..... ? ..... substance. A) Colder to hotter. B) Hotter to colder. C) Hotter to hotter. D) Colder to colder. Show Answer Correct Answer: B) Hotter to colder. 22. Heat is measured in? A) Pascal. B) Joule. C) Newton. D) Bar. Show Answer Correct Answer: B) Joule. 23. Paheli and Boojho measured their body temperature. Paheli found hers to be 98.6$^\circ$F and Boojho recorded 37$^\circ$C. Which of the following statements is true? A) Paheli has a higher body temperature than Boojho. B) Paheli has a lower body temperature than Boojho. C) Both have normal body temperature. D) Both are suffering from fever. Show Answer Correct Answer: C) Both have normal body temperature. 24. Heat energy traveling through space is an example of ..... A) Radiation. B) Convection. C) Density. D) Conduction. Show Answer Correct Answer: A) Radiation. 25. NUTRITIONISTS MEASURE ENERGY IN UNITS CALLED? A) Calories. B) Joules. C) Carbs. D) Kilocalories. Show Answer Correct Answer: A) Calories. 26. As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting. A) Heat causes the molecules to expanded and forces them apart. B) Heat removes thermal energy from the ice cube and causes it to become liquid water. C) Adding energy causes the bonds between the hydrogen and oxygen in the ice cube to break. D) The transfer of thermal energy to the ice cube causes its molecules to move faster. Show Answer Correct Answer: D) The transfer of thermal energy to the ice cube causes its molecules to move faster. 27. Only the torrid zone gets direct rays from the sun. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 28. Total amount of thermal energy in an object depends on A) Temperature and number of particles. B) Temperature. C) The object's specific heat. D) The number of particles. Show Answer Correct Answer: A) Temperature and number of particles. 29. Heat describes ..... A) The temperature of an object. B) The total energy of all the particles within an object. C) The sunburn from the sun. D) Boiling water. Show Answer Correct Answer: B) The total energy of all the particles within an object. 30. Match the definition to the proper word.Requires heat top be absorbed from outside the body. A) Exothermic. B) Thermostat. C) Thermopiles. D) Endothermic. Show Answer Correct Answer: A) Exothermic. 31. Normal human body temperature is A) 42 degree Celsius. B) 98 degree Fahrenheit. C) 32 degree Celsius. D) 37 degree Celsius. Show Answer Correct Answer: D) 37 degree Celsius. 32. To make ice you need to ..... A) Add heat. B) Take heat away. C) Wait for the winter. D) None of the above. Show Answer Correct Answer: B) Take heat away. 33. Bob is putting new water pipes in his house. Which material would be best for Bob to use to prevent his pipes from freezing? A) Steel. B) Aluminum. C) Plastic. D) Copper. Show Answer Correct Answer: C) Plastic. 34. What is the measurement of the average kinetic energy of a substance? (a) A) Potential energy. B) Thermal energy. C) Kinetic energy. D) A. Temperature. Show Answer Correct Answer: D) A. Temperature. 35. If you roast a marshmallow over a fire using a metal rod, it might burn your hand because ..... A) The metal radiates heat. B) The metal makes heat when held tightly. C) The metal conducts heat well. D) The metal makes electricity when heated. Show Answer Correct Answer: C) The metal conducts heat well. 36. If temperature rises by $20^0$ A) 253. B) 273. C) 293. D) 20. Show Answer Correct Answer: D) 20. 37. When two bodies are at thermal equilibrium then choose the correct option A) They will have same temperature. B) Transfer of heat will not take place. C) Molecules in both bodies will have same average linear K.E. D) May have same internal energy. Show Answer Correct Answer: B) Transfer of heat will not take place. 38. The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called its: A) Change of state. B) Heat transfer. C) Melting point. D) Specific heat. Show Answer Correct Answer: D) Specific heat. 39. THE HEAT FLOWS FROM A BODY AT ..... TEMPERATURE TO ..... TEMPERATURE? A) LOWER, LOWER. B) LOWER, HIGHER. C) HIGHER, LOWER. D) HIGHER, HIGHER. Show Answer Correct Answer: C) HIGHER, LOWER. 40. All of the following are examples of heat created by electricity EXCECPT A) Computer. B) Clothes iron. C) Oven. D) Piano. Show Answer Correct Answer: D) Piano. 41. Ironing a shirt is an example of ..... A) Radiation. B) Conduction. C) Convection. D) Condensation. Show Answer Correct Answer: B) Conduction. 42. How does the air move in a sea breeze? A) Wind moves from north to south. B) Wind moves from ocean to the land. C) Wind moves from the land to the ocean. D) Wind moves from south to north. Show Answer Correct Answer: B) Wind moves from ocean to the land. 43. The Sun is the source of heat in a desert. The body temperatures of reptiles, like lizards, change with their environment. Which statement describes how the heat of the sand affects the lizard's body as it comes out of the shade? A) The sand gets cooler when then lizard walks across it. B) The lizard's body temperature increases. C) The sand gets warmer when the lizard lays down. D) The lizard's body temperature decreases. Show Answer Correct Answer: B) The lizard's body temperature increases. 44. Lyric rubs her hands on her arms because she is cold. Her arms warm up.Which question could you to identify the heat source A) Where is she located?. B) Do her arms get warmer when she draws a picture?. C) Do her arms get warmer if she wears green?. D) Would she have the same result if she was still?. Show Answer Correct Answer: D) Would she have the same result if she was still?. 45. What is thermal energy? A) I soup can. B) Energy that comes from heat. C) A compass. D) Something to tell the temperature with. Show Answer Correct Answer: B) Energy that comes from heat. 46. A clinical thermometer reads temperature between A) 35$^{o}$C to 42$^{o}$ C. B) -30$^{o}$C to 45$^{o}$ C. C) 30$^{o}$C to 40$^{o}$ C. D) 30$^{o}$C to 45$^{o}$ C. Show Answer Correct Answer: A) 35$^{o}$C to 42$^{o}$ C. 47. This type of heat transfer occurs when objects are touching. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. 48. Macaroni rises and falls in a pot of heated water. A) Dinner. B) Convection. C) Conduction. D) Radiation. Show Answer Correct Answer: B) Convection. 49. Ventilation in rooms is due to A) Conduction. B) Convection. C) Radiation. D) All of the three. Show Answer Correct Answer: B) Convection. 50. A ..... is a unit of heat equal to 1, 000 great calories. A) Thermos. B) Therm. C) Thermophile. D) Thermograph. Show Answer Correct Answer: B) Therm. 51. What do we call materials that let heat pass through them easily? A) Conductors. B) Insulators. C) Transparent. D) None of the above. Show Answer Correct Answer: A) Conductors. 52. To measure the temperature difference between two cups of water, you would use a ..... A) Balance scale. B) Ruler. C) Measuring cup. D) Thermometer. Show Answer Correct Answer: D) Thermometer. 53. What is the mode of heat transfer when the sun heats your body? A) Radiation. B) Convection. C) Conduction. D) Density. Show Answer Correct Answer: A) Radiation. 54. In nature, heat always flows from a: A) Cold object to a warm object. B) Small object to a big object. C) Warm object to a cold object. D) Large object to a small object. Show Answer Correct Answer: C) Warm object to a cold object. 55. Heat and Temperature are the same thing A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 56. Temperature of boiling water cannot be measured by a ..... thermometer A) Clinical thermometer. B) Laboratory thermometer. C) Normal thermometer. D) None of the above. Show Answer Correct Answer: A) Clinical thermometer. 57. Land heats up and cools down faster than water. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 58. The principle of method of mixtures A) Heat gain by hot body is equal to heat lost by cold. B) Heat gain by heavier body is equal to heat lost by lighter body. C) Heat gained by cold body is equal to heat lost by hot body. D) All the above. Show Answer Correct Answer: C) Heat gained by cold body is equal to heat lost by hot body. 59. Which is NOT en example of heat energy? A) Burning something. B) Mixing one substance with another. C) Rubbing objects together. D) The Sun. E) Thinking really hard. Show Answer Correct Answer: E) Thinking really hard. 60. How many heat zones are there? A) 3. B) 4. C) 1. D) 2. Show Answer Correct Answer: A) 3. ← 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books