Chapter 6

3. Materials used in buildings and clothing to help keep heat inside.
8. Heat transfer through direct contact that rubber or plastic parts limit in a vacuum bottle.
9. A large hooded fur outer jacket that blocks wind and warms cold air before breathing.
12. The waterproof material traditionally used by the Inuit for winter clothing.
14. An instrument used in labs to measure electrical thermal energy supplied to a liquid.
15. Small fluffy feathers in winter clothing that create large pockets of trapped air.
17. A common insulating material with an R-value of 4.25 per 25 mm.
18. The movement of air or fluids that transfers heat, which trapped still air limits.
20. A beach material with a low specific heat capacity of 0.66 J/g°C that heats up quickly under sunlight.

1. The measurement scale used to rate the overall effectiveness of an insulating material.
2. A material such as single-pane glass that allows heat to pass through quickly.
4. A liquid with a high specific heat capacity of 4.19 J/g°C that moderates coastal climates.
5. A natural reaction to cold temperatures that helps raise skin hair.
6. A gap inside a thermal flask where most air is removed to limit heat loss by convection.
7. The reflective coating applied to thermos flask walls to reflect heat.
10. A double-walled insulated container designed to keep liquids warm or cool.
11. ____ heat capacity is a measure of a substance's ability to hold or release heat.
13. Energy transfer from light or heat waves that is absorbed or reflected by different colored surfaces.
16. A material containing trapped nitrogen bubbles used to increase the R-value of cold-water diving suits.
19. What firefighter suit material does when exposed to high heat to insulate against further burning.