This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 16 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. On a hot day in the sun, why does Robert use a foam can holder to keep his drink cool? A) Foam insulates the cold drink. B) Foam reflects cold air from the can. C) Foam reflects heat from the sun off the can. D) Foam conducts heat between the can and the air. Show Answer Correct Answer: A) Foam insulates the cold drink. 2. Walking along the sand on the beach A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Conduction. 3. LT3:If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ..... A) One reaches a temperature of zero. B) They both have an equal temperature. C) One runs out of energy. D) None of the above. Show Answer Correct Answer: B) They both have an equal temperature. 4. Write true or false for each statement (a) Evaporation is rapid on a wet day. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 5. What are common sources of heat? A) Water, fire and air. B) Sun, chemical, and electrical. C) Stove, freezer and toaster. D) House, park and car. Show Answer Correct Answer: B) Sun, chemical, and electrical. 6. Which material would be the bestchoice for the handle of a cooking pot? A) Metal, it is string and durable. B) Plastic, it does not conduct heat. C) Glass, it is a good conductor of heat. D) Copper, it distributes heat evenly. Show Answer Correct Answer: B) Plastic, it does not conduct heat. 7. Unit of measurement for temperature. A) Millilitres. B) Kilograms. C) Kilometres. D) Degree Celcius. Show Answer Correct Answer: D) Degree Celcius. 8. What is the boiling point of water in Celsius? A) 100$^\circ$C. B) 0$^\circ$C. C) 50$^\circ$C. D) None of the above. Show Answer Correct Answer: A) 100$^\circ$C. 9. Choose a green house gas. A) Carbondioxide. B) Oxygen. C) Nitrogen. D) Carbon monoxide. Show Answer Correct Answer: A) Carbondioxide. 10. The movement of thermal energy from a warmer object to a cooler object is called A) Momentum. B) Motion. C) Temperature. D) Heat. Show Answer Correct Answer: D) Heat. 11. Warm air over the beach rises while cooler, dense air from the ocean rushes in due to A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 12. A Room Heater is kept on stool in the corner of room. What type of heat transfer is happening? A) Conduction. B) Convection. C) Radiation. D) None of these. Show Answer Correct Answer: C) Radiation. 13. What is the melting point of ice in Celsius? A) 0$^\circ$C. B) 100$^\circ$C. C) 50$^\circ$C. D) None of the above. Show Answer Correct Answer: A) 0$^\circ$C. 14. This type of material allows heat to pass through it easily. A) Insulator. B) Conductor. C) Degrees. D) Water. Show Answer Correct Answer: B) Conductor. 15. A clinical Thermometer should be ..... before and after use, preferably with an ..... solution. A) Muddy, unsaturated. B) Slimy, lime and water. C) Tasty, noodles and masala. D) Washed, antiseptic. Show Answer Correct Answer: D) Washed, antiseptic. 16. Which is NOT a way that heat can be produced? A) Electricity. B) Rubbing your hands together. C) Fire. D) Rain. Show Answer Correct Answer: D) Rain. 17. In how many categories heat exchangers are classified on the basis of physical state of heat exchanging fluids? A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: D) 2. 18. Which type of heat transfer is responsible for the warmth we feel from the sun? A) Conduction. B) Radiation. C) Convection. D) Evaporation. Show Answer Correct Answer: B) Radiation. 19. Energy that is transferred from hotter objects to cooler objects is ..... A) Electricity. B) Temperature. C) Thermal/Heat. D) Conduction. Show Answer Correct Answer: C) Thermal/Heat. 20. A pot of 2400g of water at a temperature of 25$^\circ$C is heated on a stove until the water boils (100$^\circ$C). The specific heat of water is 4.18 J/(g$^\circ$C).Determine the heat energy needed to heat the water in the pot to boiling. A) 752, 400J. B) 1, 003, 200J. C) 43, 062.g. D) 133.Stager. Show Answer Correct Answer: A) 752, 400J. 21. Everyday the earth is warmed by the sun. What kind of heat transfer is taking place in this process? A) Radiation. B) Conduction. C) What is a 'sun'?. D) Convection. Show Answer Correct Answer: A) Radiation. 22. An ice cube feels cold when we hold it. Which of the following best explains why? A) Heat moves from our hands into the ice cube. B) Cold moves from our hands into the ice cube. C) Heat moves from the ice cube into our hands. D) Cold moves from the ice cube into our hands. Show Answer Correct Answer: A) Heat moves from our hands into the ice cube. 23. Which description defines heat? A) Change in the temperature of a substance in degrees Celsius. B) Total thermal energy of an object or substance. C) Energy transferred between objects at different temperatures. D) Average kinetic energy of the particles that make up a substance. Show Answer Correct Answer: C) Energy transferred between objects at different temperatures. 24. The process of changing a ..... into a solid by cooling is called freezing. A) Gas. B) Liquid. C) All the above. D) None of the above. Show Answer Correct Answer: B) Liquid. 25. Which of the following shows heat gain? A) Water turning into ice. B) Hot bowl of soup became room temperature. C) Ice cream melting under the sun. D) Shivering in a cold room. Show Answer Correct Answer: C) Ice cream melting under the sun. 26. How is heat transferred through conduction? A) Heat transferred through reflection. B) Heat transferred through radiation. C) Heat transferred through convection. D) Direct contact between particles in a material. Show Answer Correct Answer: D) Direct contact between particles in a material. 27. As you travel from west to east, does it get later or earlier? A) Earlier. B) Later. C) All the above. D) None of the above. Show Answer Correct Answer: B) Later. 28. Which of the following wordsmeans, "half of a sphere" ? A) Hemisphere. B) Prime Meridian. C) Equator. D) Latitude. Show Answer Correct Answer: A) Hemisphere. 29. Which diagram best represents the direction that heat energy will flow during transfer? A) C. B) A. C) D. D) B. Show Answer Correct Answer: A) C. 30. Transfer of energy between solids by direct contact is: A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. 31. Mitch read that rubbing skin on skin creates more friction than rubbing skin on paper. How could he best test this? A) He could rub his hands on a doorknob, then on paper. B) He could rub two pieces of paper together. C) He could rub his hands together, then on a piece of paper on a table. D) He could rub his hands together inside his classroom, then outside. Show Answer Correct Answer: C) He could rub his hands together, then on a piece of paper on a table. 32. What scale does the United States use to measure temperature? A) Kelvin. B) Fahrenheit. C) Celsius. D) None of the above. Show Answer Correct Answer: B) Fahrenheit. 33. What is the specific heat of an unknown substance if 100.0 g of it at 200.0 $^\circ$C reaches an equilibrium temperature of 27.1 $^\circ$C when it comes in contact with a calorimeter of water. The water weighs 75. g and had an initial temperature of 20.00 $^\circ$C? (Specific heat of water is 4.18 J/g$^\circ$C) A) 0.129 J/g$^\circ$C. B) 0.111 J/g$^\circ$C. C) 22225.85 J. D) 1.29 J/g$^\circ$C. Show Answer Correct Answer: A) 0.129 J/g$^\circ$C. 34. What are waves that can transfer heat through the vacuum of empty space? A) Convection. B) Conduction. C) Heat. D) Electromagnetic waves. Show Answer Correct Answer: D) Electromagnetic waves. 35. The specific heat of platinum is 0.133 J/g$^\circ$C. How much heat(Q) is released when a 10 g piece of platinum cools from 100$^\circ$C to 50$^\circ$C? A) 0.665 J. B) 0.0266 J. C) 665 J. D) 66.5 J. Show Answer Correct Answer: D) 66.5 J. 36. The reading of the thermometer in hot water A) Increases. B) Decreases. C) Remains constant. D) None of above. Show Answer Correct Answer: A) Increases. 37. Hot objects begin to cool as A) Atoms in the object react with the oxygen in the air. B) Energy in the object is transferred to the surrounding air. C) Energy in the object cancel out energy in the air. D) Cooler air is transferred to the object. Show Answer Correct Answer: B) Energy in the object is transferred to the surrounding air. 38. How does heat from thermal energy move? A) Moves from hot to cold. B) Moves from cold to hot. C) Moves up and never down. D) Moves from side to side. Show Answer Correct Answer: A) Moves from hot to cold. 39. Anya placed an ice cube on the sidewalk on a warm day. The ice cube soon melted to form a puddle. What process caused the ice cube to melt? A) Heat transferred through the ice cube by convection. B) Heat transferred from the air to the ice cube by radiation. C) Heat transferred from the air and the pavement by conduction. D) Heat transferred through the ice cube into the pavement by conduction. Show Answer Correct Answer: C) Heat transferred from the air and the pavement by conduction. 40. What is the meaning of convection? A) Cold rises heat falls. B) Heat. C) Cold. D) Hot rises cold falls. Show Answer Correct Answer: D) Hot rises cold falls. 41. The calibration on clinical thermometer is from A) 35$^{o}$C to 42$^{o}$C. B) 10$^{o}$C to 110$^{o}$C. C) 32$^{o}$C to 45$^{o}$C. D) 0$^{o}$C to 100$^{o}$C. Show Answer Correct Answer: A) 35$^{o}$C to 42$^{o}$C. 42. Which statement describes the transfer of energy when an ice cube is placed in a cup of hot tea? A) Heat flows from the tea to the ice. B) Cold flows from the ice to the tea. C) Cold flows from the ice, and heat flows from the tea. D) Heat flows simultaneously between the ice and the tea. Show Answer Correct Answer: A) Heat flows from the tea to the ice. 43. Smoke stays low. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 44. Answering which question would help a student find out that the Sun is a source of heat energy? A) Why do some foods take longer to cook in the oven?. B) Why does a television feel warm after being turned on?. C) Why does a pot of water boil when heated on the stove?. D) Why do a pile of snowballs disappear in the spring?. Show Answer Correct Answer: D) Why do a pile of snowballs disappear in the spring?. 45. Choose the correct type of heat transfer:A hot air balloon rising A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Convection. 46. Debbie's mother has different types of pots in her kitchen. Many of them are made of copper and aluminum. Some are made of glass. Which of the following is the best reason why the pots are made of these materials? A) They are able to stop the flow of heat. B) They are good insulators of heat. C) They are good conductors of heat. D) They keep the same amount of heat. Show Answer Correct Answer: C) They are good conductors of heat. 47. You are holding a metal wire on one end, while the other end is placed over the flame. Very soon, the wire is too hot to handle. What method of heat transfer is taking place? A) Conduction. B) Convection. C) Sublimation. D) Radiation. Show Answer Correct Answer: A) Conduction. 48. Which of the following best describes a vacuum? A) Empty. B) Hot. C) Cold. D) Shiny. Show Answer Correct Answer: A) Empty. 49. Boiling water is an example of what two types of heat transfer A) Conduction and Radiation. B) Conduction and Convection. C) Radiation and Convection. D) None of the above. Show Answer Correct Answer: B) Conduction and Convection. 50. Which example shows that heat can change an object? A) Baking an apple. B) Drawing a picture of the sun. C) Watching a video in slow motion. D) Riding a bike down a hill. Show Answer Correct Answer: A) Baking an apple. 51. What is the process of heat transfer in liquids called? A) Conduction. B) Evaporation. C) Convection. D) Radiation. Show Answer Correct Answer: C) Convection. 52. ..... behaves like heat stores house for the earth A) Oceans. B) Hills. C) Plateaus. D) All the above. Show Answer Correct Answer: A) Oceans. 53. The unit(s) for heat are? A) Calories. B) Joules. C) Calories or joules. D) None of the above. Show Answer Correct Answer: C) Calories or joules. 54. Assuming that the thermal energy supplied to each of them is same, which of following states of matter would expand the least? (a) A) A. Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: A) A. Solid. 55. When an electric heater is supplied with an electric power of 2.0 kW to heat 4.0 kg of water for 1 minute, calculate the increase in temperature of the water. Assume that the specific heat capacity of water is 4200 J kg$^{-1}$ $^{0}$C$^{-1}$ and there is no heat loss to the surroundings. A) 14$^{0}$C. B) 30$^{0}$C. C) 7.1$^{0}$C. D) 3.05$^{0}$C. Show Answer Correct Answer: C) 7.1$^{0}$C. 56. Energy from the sun reach Earth mostly by A) Conduction. B) Radiation. C) Thermal expansion. D) Convection. Show Answer Correct Answer: B) Radiation. 57. Heat energy always moves in which direction? A) Large objects to small objects. B) Dark objects to light objects. C) Warm objects to cool objects. D) Smooth objects to rough objects. Show Answer Correct Answer: C) Warm objects to cool objects. 58. Rubbing your hands together is a way of producing heat. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 59. Which is an example of radiated heat for cooking? A) Scrambling eggs on the stove. B) Cooking a pot of soup. C) Grilling hot dogs over a campfire. D) Frying hamburgers in a frying pan. Show Answer Correct Answer: C) Grilling hot dogs over a campfire. 60. Heat is transferred through copper and iron by ..... A) Convection. B) Radiation. C) Conduction. D) All the above. Show Answer Correct Answer: C) Conduction. ← 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