Provide an example of how someone would have heated their home in the past and compare that to how people heat their homes today (2 marks) 2. Consider a clothing dryer, what purpose (want or need) does this technology provide for people (1 mark)
3. Give an example of a heat device in your home that you are able to control how much heat is produced and explain (in general terms) how this works (2 marks)
4. What is a personal choice that you can make related to the amount of heat you use, or the amount of heat that is wasted in your home? (1 mark)
5. Imagine that you have a plastic spoon, a metal spoon and a wooden spoon in a pot of hot water. After using these to stir the liquid for 1 minute, which spoon will feel the hottest and explain why using your understanding of particle movement. (2 marks)
6. The spoon in the example above feels hotter because of what type of heat energy transfer? (1 mark)
7. Out of the plastic spoon, the metal spoon and the wooden spoon, which one(s) would be considered a conductor and which one(s) would be considered an insulator? Explain. (2 marks)
8. The transfer of energy in a fluid is very different. The heated particles become less dense, and so they rise, with the colder denser particles rushing in to take their place. This type of thermal energy transfer creates a . (1 mark)
9. Which type of energy transfer does not involve particles? (1 mark)
10. You have two pots of different sizes. What is true about the temperature in both pots? Why? (2 marks)
11. You have two pots of different sizes. What is true about the heat in both pots? Why? (2 marks)
12. When a phase change occurs, what happens to the temperature? (1 mark)
13. When heat energy is added to a piece of material, what are two things that happen to the particles? (2 marks)
14. Why do they leave spaces between railway tracks? (1 mark)

15. Explain why the metal ball did not fit through the ring after it was exposed to liquid nitrogen