This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 3 Heat – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 3 Heat Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which sentence is true? A) Conduction can take place through solids, liquids and gases. B) All objects radiate heat to their surroundings. C) Convection currents move sideways. D) A laboratory thermometer is used to measure the temperature of a human body. Show Answer Correct Answer: B) All objects radiate heat to their surroundings. 2. What happens when heat is added to a water? A) The thermal energy of the water decreases. B) The particles in the water move faster. C) The particles in the water start to stick together. D) The energy in the water is released. Show Answer Correct Answer: B) The particles in the water move faster. 3. A metal spoon is used to stir a pot of boiling water. The person holding the metal spoon feels the spoon get hot. Which best describes the transfer of heat in the spoon? A) Radiation. B) Electrical. C) Conduction. D) Convection. Show Answer Correct Answer: C) Conduction. 4. What is the normal temperature of a healthy person? A) 37$^\circ$C. B) 37$^\circ$F. C) All the above. D) None of the above. Show Answer Correct Answer: A) 37$^\circ$C. 5. A toaster warms a bagel for breakfast. What type of thermal energy transfer is occuring? A) Conduction. B) Convection. C) Radiation. D) Transformation. Show Answer Correct Answer: C) Radiation. 6. What is the impact of Michael's father's absence on his life in 'Heat'? A) It makes him more independent. B) It has no effect on him. C) It causes him to lose interest in baseball. D) It leads to financial difficulties. Show Answer Correct Answer: A) It makes him more independent. 7. A shirt warmed when it touches a hot iron A) Conduction. B) Convection. C) Radiation. D) Laundry. Show Answer Correct Answer: A) Conduction. 8. Which one of the following is a reliable measure of heat? A) Hotness. B) Coldness. C) Temperature. D) None of these. Show Answer Correct Answer: C) Temperature. 9. What is a heat and light source? A) Water. B) Sun. C) Moon. D) Hot water. Show Answer Correct Answer: B) Sun. 10. Jennifer is in a room that has an air temperature of 25$^\circ$C (77$^\circ$F). Before pouring cold water into a glass, she notices that the ice in the pitcher is melting. What would be the BEST way for Jennifer to describe how thermal energy is being transferred? A) Heat moves from the ice to the water. B) Cold moves from the ice into the water. C) Heat moves from the air into the water. D) Cold moves from the water into the room. Show Answer Correct Answer: C) Heat moves from the air into the water. 11. Which best explains what happens in most materials when they are heated? A) They expand. B) They contract. C) They change color. D) They double in size. Show Answer Correct Answer: A) They expand. 12. Energy is transferred as heat between two objects of ..... temperatures. A) Differing. B) Same. C) All the above. D) None of the above. Show Answer Correct Answer: A) Differing. 13. What happens during heat loss? A) The object will expand. B) The object will contract. C) All the above. D) None of the above. Show Answer Correct Answer: B) The object will contract. 14. When wet clothes dry water in clothes A) Evaporate. B) Boils. C) Condense. D) Freeze. Show Answer Correct Answer: A) Evaporate. 15. When you touch a piece of ice with your finger, energy flows ..... A) From your finger to the ice. B) From the ice to the finger. C) Both ways. D) Energy does not flow. Show Answer Correct Answer: A) From your finger to the ice. 16. Which does NOT receive heat from the sun? A) A tree's leaves. B) The floor of a cave. C) A roof of a house. D) The water in a pool. Show Answer Correct Answer: B) The floor of a cave. 17. When particles spread apart and move faster with heat, they are ..... A) Crying. B) Melting. C) Shrinking. D) Expanding. Show Answer Correct Answer: D) Expanding. 18. A boy touches a stove and gets burned. What transfer of heat caused his hand to get burned? A) Radiation. B) Conduction. C) Convection. D) Combustion. Show Answer Correct Answer: B) Conduction. 19. Which is NOT a heat transfer by radiation? A) A bottle sitting in the sun that gets warm. B) Sitting beside of a campfire and feeling the heat. C) A pot of water heating over a hot stove. D) A person sunbathing. Show Answer Correct Answer: C) A pot of water heating over a hot stove. 20. A scientist trying to identify an unknown liquid may heat the liquid. Which would be the BEST reason for scientist to heat the liquid. A) To observe a color change. B) To get rid of most impurities. C) To identify the boiling point. D) To collect gases for additional study. Show Answer Correct Answer: C) To identify the boiling point. 21. Convection is a mode of transferring heat through ..... A) Gases. B) Solids. C) Liquids. D) Both liquids and gases. Show Answer Correct Answer: D) Both liquids and gases. 22. THE DEGREE OF HOTNESS OR COLDNESS OF A BODY IS CALLED A) TEMPERATURE. B) Kelvin. C) THERMOMETER. D) None of the above. Show Answer Correct Answer: A) TEMPERATURE. 23. An aluminum plate and a plastic plate have been in the freezer all night long. When you remove them the next morning, A) The plates have the same temperature. B) The plastic plate has a higher temperature. C) The plastic plate has a lower temperature. D) The aluminum plate has a lower temperature. Show Answer Correct Answer: A) The plates have the same temperature. 24. Jimmy is a astronaut, when he was in space he drifted close to the sun. He said that he felt the hottest he had ever felt. What kind of heat transfer caused this? A) COMBUSTION. B) Radiation. C) Convection. D) Conduction. Show Answer Correct Answer: B) Radiation. 25. WHICH OF THE FOLLOWING IS NOT A EFFECT OF HEAT A) CHANGE IN TEMPRATURE. B) CHANGE IN SIZE. C) CHANGE IN STATE. D) CHANGE IN COLOUR. Show Answer Correct Answer: D) CHANGE IN COLOUR. ← 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