This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. HEAT FROM THE SUN REACHES THE EARTH BY A) CONVECTION. B) CONDUCTION. C) RADITION. D) None of the above. Show Answer Correct Answer: C) RADITION. 2. The heat energy required to change 1 kg of a substance from a solid to a liquid state at the same temperature is called ..... A) Specific heat capacity. B) Specific latent heat of vaporization. C) Sensible heat. D) Specific latent heat of fusion. Show Answer Correct Answer: D) Specific latent heat of fusion. 3. The Earth is divided in ..... zones. A) 3. B) 4. C) 2. D) None of the above. Show Answer Correct Answer: A) 3. 4. Convection can take place in ..... A) Solids only. B) Liquids only. C) Liguids and gases only. D) Solids, liquids and gases. Show Answer Correct Answer: C) Liguids and gases only. 5. When cold water is added slowly to warm water they will slowly blend over time evenly through the entire liquid. Which BEST explains the reason the heat moves throught the liquid? A) The densities of the liquids are similar. B) Cold liquids rise and hot liquids sink causing mixing. C) Molecules creates chemical bonds the help spread energy. D) Heat always moves from higer temperatures to lower temperatures. Show Answer Correct Answer: D) Heat always moves from higer temperatures to lower temperatures. 6. An 25.2 g block of copper at 95.10 $^\circ$C is dropped into a calorimeter containing 75.56 g of water at 25.36 $^\circ$C. What will be the final temperature?C$_{Copper}$ =.3884 J/g * $^{o}$C A) 33.8 $^{o}$C. B) 27.45 $^{o}$C. C) 21.3 $^{o}$C. D) 44.9 $^{o}$C. Show Answer Correct Answer: B) 27.45 $^{o}$C. 7. Hot air balloon rises. A) Conduction. B) Convection. C) Radiation. D) Adventure. Show Answer Correct Answer: B) Convection. 8. Which is the major mean of heat transfer in a Double Pipe heat exchanger? A) Convection. B) Conduction. C) Radiation. D) Combined Convection and Conduction. Show Answer Correct Answer: D) Combined Convection and Conduction. 9. On a hot summer day, which shirt would you put on to make sure you stay cool while you are outside playing? A) A black shirt because it reflects the sun's energy. B) A white shirt because it reflects the sun's energy. C) A black shirt because it absorbs the sun's energy. D) A white shirt because it absorbs the sun's energy. Show Answer Correct Answer: B) A white shirt because it reflects the sun's energy. 10. Materials through which heat can flow easily is called A) Insulators. B) Radiators. C) Transformers. D) Conductions. Show Answer Correct Answer: D) Conductions. 11. Which of the following would be the best insulator? A) Air. B) Aluminum. C) Copper. D) Silver. Show Answer Correct Answer: A) Air. 12. The extreme range of temperature in a day is measured using A) Celsius thermometer. B) Fahrenheit thermometer. C) Maximum-minimum thermometer. D) Kelvin thermometer. Show Answer Correct Answer: C) Maximum-minimum thermometer. 13. Your best friend has a bunk bed. You move from the bottom bunk to the top bunk and notice that the air is warmer. The warm air rises because of ..... ? ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 14. Kim wants to know how much heat is given off by her desk lamp. What is the BEST way to measure the hear from the light bulb? A) Place a glass of ice under the lamp. B) Place a black shirt under the lamp. C) Place her hand under the lamp. D) Place a thermometer under the lamp. Show Answer Correct Answer: D) Place a thermometer under the lamp. 15. Manny puts a hot slice of pie on a plate. When he picks it up he notices that the plate feels warm. In which direction does the heat flow to make the plate feel warm? A) From the plate to the pie. B) From the pie to the plate. C) From his hand to the plate. D) From his hand to the pie. Show Answer Correct Answer: B) From the pie to the plate. 16. How does heat move? A) From a warmer to a cooler object. B) From a cooler to a warmer object. C) Toward a hot object. D) Away from a cold object. Show Answer Correct Answer: A) From a warmer to a cooler object. 17. Which of the following materials is the best conductor of heat? A) Wood. B) Plastic. C) Copper. D) Glass. Show Answer Correct Answer: C) Copper. 18. What causes water to freeze solid when placed in a freezer? The freezer- A) Adds heat to the water. B) Puts electricity in the water. C) Takes heat away from the water. D) Does not let light shine on the water. Show Answer Correct Answer: C) Takes heat away from the water. 19. The liquid (Mercury ) rises in thermometer if, kept in hot water bath because A) Liquid expands on heating. B) Liquid contracts on heating. C) Mercury moves if its disturbed. D) None of the above. Show Answer Correct Answer: A) Liquid expands on heating. 20. Ice melting in a cup is caused by ..... A) The ice is heated up by the drink. B) Ice is cooling down the liquid. C) All the above. D) None of the above. Show Answer Correct Answer: A) The ice is heated up by the drink. 21. What type of energy is heat energy? A) Potential. B) Kinectic. C) Chemical. D) Mechanical. Show Answer Correct Answer: B) Kinectic. 22. Calorimeters use insulating materials to: A) Encourage affordable materials in science experiments in schools. B) Preserve the heat of the environment outside the Styrofoam cup. C) Prevent heat from escaping to the environment. D) Keep the liquid inside the Styrofoam cup from overheating. Show Answer Correct Answer: C) Prevent heat from escaping to the environment. 23. Which of the following is a cooling process A) Condensation. B) Boiling. C) Evaporation. D) All the above. Show Answer Correct Answer: C) Evaporation. 24. A person calculated his body temperature to be 103$^{o}$F. What is the temperature in $^{o}$C- A) 39.4. B) 39.6. C) 40.4. D) 40.6. Show Answer Correct Answer: A) 39.4. 25. A 125.3 g sample of aluminum at a temperature of 36.2$^{o}$C is placed in a freezer. What will be the final temperature of the aluminum sample if the freezer extracts 896.3 j of energy? (C$_{Al =.9025 j/g*}$$^{o}$$_{C)}$ A) 7.9 $^{o}$C. B) -7.9 $^{o}$C. C) 44.1 $^{o}$C. D) 28.3 $^{o}$C. Show Answer Correct Answer: D) 28.3 $^{o}$C. ← 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