This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 42 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of A) Convection. B) Conduction. C) Radiation. D) Insulation. Show Answer Correct Answer: B) Conduction. 2. If 5.0 x 10$^{5}$ J of energy is absorbed by a block of ice when it is heated from-5$^{o}$C to 0$^{o}$C, find the mass of the ice. Given that the specific heat capacity of ice is 2.05 x 10$^{3}$ J kg$^{-1}$ $^{o}$C$^{-1}$ and the specific latent heat of fusion of ice is 3.34 x 10$^{5}$ J kg$^{-1}$. A) 1.45 kg. B) 2.56 kg. C) 3.01 kg. D) 3.27 kg. Show Answer Correct Answer: A) 1.45 kg. 3. A 0.3 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66, 300 J. If the specific heat of copper is 390 J/g $^{0}$C, what Is the change of the copper's temperature? A) 566.7 $^\circ$C. B) 77, 571, 000 Joules. C) All the above. D) None of the above. Show Answer Correct Answer: A) 566.7 $^\circ$C. 4. Why would aluminum foil be a good choice to wrap food that needs to be kept cool outside? A) The properties of the foil absorb the heat out of the food. B) The properties of the foil reflect the temperature of the food back on itself. C) The shiny surface of the foil reflects the heat of the sun and helps to keep some heat out. D) The shiny surface of the foil absorbs the heat of the sun but keeps it away from the food. Show Answer Correct Answer: C) The shiny surface of the foil reflects the heat of the sun and helps to keep some heat out. 5. The heat lost or gained by a substance A) Depends on mass[M]. B) Depends on change in temperature [ $\Delta$. C) Nature of substance represented by specific heat. D) All of the above. Show Answer Correct Answer: D) All of the above. 6. The ..... zone lies just south of the Antarctic Circle A) The Temperate Zone. B) The Torrid Zone. C) The Frigid Zone. D) None of the above. Show Answer Correct Answer: C) The Frigid Zone. 7. Rahul wonders why the level of Mercury should change at all when the bulb of the bulb of the thermometer is brought in contact with another object. A) Because Mercury is a liquid material. B) Because bulb have no kink. C) Temperature of object may not same as mercury. D) Every object has different temperature. Show Answer Correct Answer: C) Temperature of object may not same as mercury. 8. How does heat energy from the Sun reach Earth? A) Radiation. B) Solar wind. C) Conduction. D) Convection. Show Answer Correct Answer: A) Radiation. 9. The materials which allow heat to pass through them easily are called ..... A) Conductors. B) Insulators. C) Heat. D) Radiation. Show Answer Correct Answer: A) Conductors. 10. 1 calorie = ..... joule A) 4.186. B) 0.45. C) 41.86. D) 0.0418. Show Answer Correct Answer: A) 4.186. 11. On heating the Liquids show expansion in A) Increase in length. B) Area. C) Increase in shape. D) Cubical expansion. Show Answer Correct Answer: D) Cubical expansion. 12. Beth is learning about the properties of heat in science class. She knows that heat must flow to cause a change of temperature in a substance. Which of the following will cause the fastest change in temperature of an ice cube? A) Ice cube in a pot of cold water. B) Ice cube in a pot of warm water. C) Ice cube in a pot of boiling water. D) Ice cube on a plate at room temperature. Show Answer Correct Answer: C) Ice cube in a pot of boiling water. 13. NAME THE ELEMENT USED IN THERMOMETER A) MAGNESIUM. B) CALCIUM. C) MERCURY. D) ALUMINIUM. Show Answer Correct Answer: C) MERCURY. 14. Dew forms on a cool drink kept in air because A) Evaporation. B) Boiling. C) Condensation. D) Freezing. Show Answer Correct Answer: C) Condensation. 15. What is temperature scales that used to measure temperature? A) Grams. B) Celsius. C) Meter. D) None of the above. Show Answer Correct Answer: B) Celsius. 16. Why do we wear sweaters in cold weather? A) To keep cold out. B) To generate heat. C) To reduce heat loss. D) All of the above. Show Answer Correct Answer: C) To reduce heat loss. 17. Lines of constant latitude or parallels A) Run north or south parallel to the equator. B) Run east or west of the Prime Meridian. C) All of these lines meet at the North and South Poles. D) None of the above. Show Answer Correct Answer: A) Run north or south parallel to the equator. 18. Evaporation occurs only ..... A) After boiling. B) After extreme cooling. C) At surface of a liquid. D) If boiling occurs at atmospheric pressure. Show Answer Correct Answer: C) At surface of a liquid. 19. The increase in length of a metal rod depends on A) The initial length of the rod only. B) The rise in temperature only. C) The material of rod only. D) All the above three factors. Show Answer Correct Answer: D) All the above three factors. 20. Heat flows in solids generally through A) Convection. B) Conduction. C) Radiation. D) All. Show Answer Correct Answer: B) Conduction. 21. How is energy from the Sun transferred? A) By radiation. B) By conduction. C) By convection. D) By the force of gravity. Show Answer Correct Answer: A) By radiation. 22. How are heat from the sun and heat from a campfire alike? A) They move by radiation. B) They move by convection. C) They move by conduction. D) They are solar energy. Show Answer Correct Answer: A) They move by radiation. 23. Which of the following is the correct location of the temperate zone? A) Between the tropics. B) Between Arctic Circle and Tropic of Capricorn. C) Between North Pole and Arctic Circle. D) None of the above. Show Answer Correct Answer: D) None of the above. 24. Heat flows through A) Solid. B) Liquid. C) Gas. D) Solid, liquid and gas. Show Answer Correct Answer: D) Solid, liquid and gas. 25. A piece of silver is heated to 87.36 $^{o}$C and dumped into a calorimeter containing 65.86 g of water at a temperature of 24.03 $^{o}$C. Calculate the mass of this zinc sample if the final temperature of the zinc and water together 28.69 $^{o}$C. (Cp $_{(silver)}$ =.2350 J/g * $^{o}$C) A) 93.11 g. B) 48.26 g. C) 110.6 g. D) 86.5 g. Show Answer Correct Answer: A) 93.11 g. ← 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