This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the freezing point of water in Fahrenheit? A) 32$^\circ$F. B) 0$^\circ$F. C) 100$^\circ$F. D) None of the above. Show Answer Correct Answer: A) 32$^\circ$F. 2. When air is heated, its density ..... A) Increases. B) Decreases. C) Remains the same. D) None of the above. Show Answer Correct Answer: B) Decreases. 3. How does heat travel? A) Heat travels from a hot place to a cold place. B) Heat travels from a cold place to a hot place. C) Heat travels in a straight line. D) None of the above. Show Answer Correct Answer: A) Heat travels from a hot place to a cold place. 4. The symbol for heat is A) C. B) M. C) Q. D) $\Delta$T. Show Answer Correct Answer: C) Q. 5. Which best explains why many car motor parts are made from metal instead of plastic? A) Metal can withstand heat better than most plastics. B) Plastic is more expensive than metal. C) Plastic is less flexible than metal. D) None of the above. Show Answer Correct Answer: A) Metal can withstand heat better than most plastics. 6. Car A has their AC set to 72$^{o}$F. Car B has their AC set to 67$^{o}$F. If it is 98$^{o}$F outside, which car will heat flow into faster? A) Car A. B) Car B. C) Heat will flow into the cars at the same rate. D) None of the above. Show Answer Correct Answer: B) Car B. 7. Kamaya goes to the park during the summer. She tries to go down the metal slide, but it is too hot. Which question will best help Maya understand why the slide is so hot? A) Is the slide straight or curved?. B) Is the Sun shining on the slide?. C) Are there other slides to play on?. D) Are there other children near the slide?. Show Answer Correct Answer: B) Is the Sun shining on the slide?. 8. What is the meaning of conduction A) When heat transfers from objects that are not touching. B) Heat rise. C) Cold fall. D) When heat transfers from objects that are touching. Show Answer Correct Answer: D) When heat transfers from objects that are touching. 9. What is a material that does NOT let heat travel through it easily and SLOWS down the transfer of heat? A) A thermometer. B) An insulator. C) A conductor. D) Air. Show Answer Correct Answer: B) An insulator. 10. Which of the following best describes temperature? A) Number of molecules. B) Motion of molecules. C) Size of molecules. D) Type of molecules. Show Answer Correct Answer: B) Motion of molecules. 11. Specific heat is ..... A) The measure of kinetic energy of an objects particles. B) A measure of the energy needed to increase the average kinetic energy of the particles. C) The heating caused by the motion of flluid due to temperature difference. D) The transfer of energy by electromagnetic radiation. Show Answer Correct Answer: B) A measure of the energy needed to increase the average kinetic energy of the particles. 12. A clinical thermometer is calibrated from? A) 35 $^{o}$C to 42 $^{o}$C. B) 10 $^{o}$C to 100 $^{o}$C. C) 0 $^{o}$C to 100 $^{o}$C. D) 110 $^{o}$C to 300 $^{o}$C. Show Answer Correct Answer: A) 35 $^{o}$C to 42 $^{o}$C. 13. In convection in gases, what happens with the cold air? A) Cold air rises. B) Cold air sinks. C) Cold air moves up and down. D) Cold air moves side ward. Show Answer Correct Answer: B) Cold air sinks. 14. What do we use a thermometer for? A) To measure the temperature of an object or area. B) To measure how much something weighs. C) To measure how long something is. D) To measure how expensive something is. Show Answer Correct Answer: A) To measure the temperature of an object or area. 15. An iron ball at 40$^\circ$C is dropped in a mug containing water at 40$^\circ$C. The heat will: A) Flow from iron ball to water. B) Not flow from iron ball to water or from water to iron ball. C) Flow from water to iron ball. D) Increase the temperature of both. Show Answer Correct Answer: B) Not flow from iron ball to water or from water to iron ball. 16. THE RANGE OF TEMPERATURE THAT CAN BE MEASURED IN CLINICAL THERMOMETER IS A) 35$^{o}$C TO 42$^{o}$C. B) 25$^{o}$C TO 45$^{o}$C. C) 30$^{o}$C TO 65$^{o}$C. D) NONE OF THE ABOVE. Show Answer Correct Answer: A) 35$^{o}$C TO 42$^{o}$C. 17. The sidewalk increases in temperature on a sunny day. A) Conduction. B) Convection. C) Radaiation. D) Heat. Show Answer Correct Answer: C) Radaiation. 18. A fireplace is heating an entire house through A) Radiation. B) Conduction. C) Convection. D) None of the above. Show Answer Correct Answer: C) Convection. 19. Heat will always transfer from the ..... object to the ..... object. A) The hottest object to the coolest object. B) The coolest object to the hottest object. C) The solid object to the liquid object. D) The liquid object to the solid object. Show Answer Correct Answer: A) The hottest object to the coolest object. 20. If I want my cup of ice water to melt quicker, where would I set it? A) In the freezer. B) Put a book under it. C) In the closet. D) Under a lamp. Show Answer Correct Answer: D) Under a lamp. 21. Normal temperature of human body A) 40 $^\circ$C. B) 37$^\circ$C. C) 34$^\circ$C. D) 25$^\circ$C. Show Answer Correct Answer: B) 37$^\circ$C. 22. Which material would make the best insulator? A) Rubber. B) Steel. C) Copper. D) Aluminum. Show Answer Correct Answer: A) Rubber. 23. The process by which transfer of heat takes place by the actual movement of particles from one part of the body to the another part is called A) Conduction. B) Convection. C) Radiation. D) Vapourisation. Show Answer Correct Answer: B) Convection. 24. Different solids have ..... melting points. A) Different. B) Same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Different. 25. Hot coffee is stirred with a spoon; the spoon gets hot due to A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. ← 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