This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Heat > Class 7 Science Chapter 3 Heat – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 18 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When heat energy is added to the substance, its particles move ..... and farther apart. A) Faster. B) Slower. C) All the above. D) None of the above. Show Answer Correct Answer: A) Faster. 2. You buy a lava lamp from the store. As the lamp heats up, blobs of liquid rise to the top then sink back down to the bottom. This process continues because of ..... ? ..... A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 3. What does light energy do? A) Lets you hear. B) Lets you see. C) Makes you move. D) Makes you warm. Show Answer Correct Answer: B) Lets you see. 4. How does the author use baseball as a metaphor in 'Heat'? A) To illustrate teamwork and cooperation. B) To show the importance of physical fitness. C) To highlight the competitive nature of sports. D) To represent life's challenges and triumphs. Show Answer Correct Answer: D) To represent life's challenges and triumphs. 5. Ice cream melting outside is an example of which type of heat source? A) Friction. B) Sunlight. C) Electricity. D) Mixing things together-chemical change. Show Answer Correct Answer: B) Sunlight. 6. What is the correct equation that should be used for solving heat capacity problems that involve one substance? A) C = (m)(Q)(delta T). B) Delta T = (m)(Q)(C). C) Q = (m)(C)(delta T). D) M = (Q)(C)(delta T). Show Answer Correct Answer: C) Q = (m)(C)(delta T). 7. What happens to metal railroad tracks during the heat of a summer day? A) Decrease in length. B) Decrease in weight. C) Increase in weight. D) Increase in length. Show Answer Correct Answer: D) Increase in length. 8. What is the definition of energy? A) The ability to cause changes in matter. B) A force that makes objects move. C) The planet next to Pluto. D) An observation made in Science. Show Answer Correct Answer: A) The ability to cause changes in matter. 9. What is an instrument, or tool, used to measure temperature? A) Conductor. B) Thermometer. C) Insulator. D) Thermal Energy. Show Answer Correct Answer: B) Thermometer. 10. The temperature at which pure ice melts is ..... A) 0$^\circ$C. B) -100$^\circ$C. C) 98.6$^\circ$F. D) 100$^\circ$C. Show Answer Correct Answer: A) 0$^\circ$C. 11. Bryce used a ..... to keep his soup warm. A) Thermostat. B) Thermopiles. C) Thermos. D) Thermal. Show Answer Correct Answer: C) Thermos. 12. Rocks getting warmed by the sun A) Convection. B) Sun bathing. C) Conduction. D) Radiation. Show Answer Correct Answer: D) Radiation. 13. Lisa is boiling an egg in a pot of water. Which question can be asked to determine the source of the heat energy? A) What is the temperature of the water. B) What is heating the water?. C) What is the temperature of the egg?. D) What type of material is the pot made of?. Show Answer Correct Answer: B) What is heating the water?. 14. Conduction is a type of heat transfer that relates to A) Liquids. B) Humans. C) Gases. D) Solids. Show Answer Correct Answer: D) Solids. 15. How does the community around Michael influence his actions in the story? A) They discourage him from playing baseball. B) They support and encourage his baseball career. C) They are indifferent to his sports activities. D) They report him to the authoritiesTagsDOK Level 2:Skill/Concept. Show Answer Correct Answer: B) They support and encourage his baseball career. 16. In heat capacity equations, what does the triangle represent? A) Mass. B) Temperature. C) Energy. D) Change in. E) Change in temp. Show Answer Correct Answer: D) Change in. 17. When holding a cup of ice water, your warm hand becomes cold. How does the heat transfer? A) From the cold cup to your hand. B) From the cold cup to the warm air. C) From the ice to your hand. D) From your warm hand to the cold cup. Show Answer Correct Answer: D) From your warm hand to the cold cup. 18. Conductors allow heat to pass through easily. Insulators prevent the flow of heat. Which of the following items is a poor conductor and a good insulator? A) Silver. B) Copper. C) Stone. D) Wood. Show Answer Correct Answer: D) Wood. 19. Why do objects cool down? A) All heat will slowly be destroyed. B) The cold attacks the heat. C) Heat is always transferring so the heat will always move to a cooler place. D) The heat disappears. Show Answer Correct Answer: C) Heat is always transferring so the heat will always move to a cooler place. 20. SI Scale of temperature is ..... A) Celsius scale. B) Reaumur scale. C) Fahrenheit Scale. D) Kelvin scale. Show Answer Correct Answer: D) Kelvin scale. 21. The handle of a spoon in hot soup becomes warm because of ..... A) Radiation. B) Conduction. C) Convection. D) Insulation. Show Answer Correct Answer: B) Conduction. 22. Valarie is investigating how heat affects the rate of evaporation of water. She makes a prediction that heat will increase the rate of evaporation. Which of the following will provide evidence that Valarie needs to support her conclusion? A) Prior knowledge and classifying. B) Data and observations. C) Questions and inferences. D) Analysis and hypotheses. Show Answer Correct Answer: B) Data and observations. 23. Which of the following materials is considered an insulator of heat? A) Wood. B) Copper. C) Aluminum. D) Iron. Show Answer Correct Answer: A) Wood. 24. You hold an ice cube in your hand and it melts. This is an example of A) Conduction. B) Translocation. C) Radiation. D) Convection. Show Answer Correct Answer: A) Conduction. 25. Which of the following is the best example of conduction? A) A light bulb warming a lampshade. B) Water boiling in a pot. C) Gases circulating in the atmosphere. D) An egg cooking in a frying pan. Show Answer Correct Answer: D) An egg cooking in a frying pan. 26. Which source of energy is used to heat Earth? A) Rain. B) Thunder. C) The wind. D) The Sun. Show Answer Correct Answer: D) The Sun. 27. How does heat transfer occur? A) Heat transfer occurs through conduction, convection, and radiation. B) Heat transfer occurs through absorption, reflection, and emission. C) Heat transfer occurs through evaporation, sublimation, and deposition. D) Heat transfer occurs through compression, expansion, and condensation. Show Answer Correct Answer: A) Heat transfer occurs through conduction, convection, and radiation. 28. During the night land breeze flows because- A) The sea cools faster. B) The land cools faster. C) Sea is empty and land is populated. D) None of the above. Show Answer Correct Answer: B) The land cools faster. 29. An insulator is a substance that ..... A) Absorbs heat. B) Reflects heat. C) Does not conduct heat. D) Flows heat. Show Answer Correct Answer: C) Does not conduct heat. 30. When an object is heated, it will increase its size. A) Thermal expansion. B) Thermal contraction. C) All the above. D) None of the above. Show Answer Correct Answer: A) Thermal expansion. ← PreviousRelated 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