Self-Test B-1.1: Heat and Heat Transfer

Complete Self-Test B-1.1 and check your answers.

1. Besides conduction and convection, in what way does most heat travel?
   1. Radiation
   2. Insulation
   3. Gravity
   4. Centrifugal force

    

2. Which one of the following items does heat travel through most quickly?
   1. Conductor
   2. Radiator
   3. Insulator
   4. Convector

    

3. What kind of heat moves through air without actually heating the air?
   1. Conduction
   2. Convection
   3. Radiation
   4. Insulation

    

4. What is the gravity circulation of water between a boiler and a heat transfer unit called?
   1. Convection
   2. Conduction
   3. Radiation
   4. Insulation

    

5. What is circulation in a gravity system caused by?
   1. The boiler being higher than the emitter
   2. The emitters being above the boiler piping
   3. The difference in the water densities in the system
   4. A pump

    

6. The density of a liquid or gas is usually increased as its temperature increases.
   1. True
   2. False

    

7. There is a gradual density loss as water is heated.
   1. True
   2. False

    

8. How does water lose heat through the walls of pipe?
   1. Convection
   2. Conduction
   3. Insulation
   4. Radiation

    

9. By what process is heat transferred between the Sun and Earth?
   1. Convection
   2. Conduction
   3. Insulation
   4. Radiation

    

10. What is the heat conductivity of air in BTU/hr per ft² per °F per inch of thickness?
    1. 320
    2. 12
    3. 4.1
    4. 0.15

     

11. A BTU is the measurement of what?
    1. Heat’s intensity
    2. Heat’s quantity
    3. Heat’s conductivity
    4. Heat’s reactivity

     

12. A degree Fahrenheit is the measurement of what?
    1. Heat’s intensity
    2. Heat’s quantity
    3. Heat’s conductivity
    4. Heat’s reactivity

     

13. One kilowatt equals how many BTU/h?
    1. 1,000
    2. 2,520
    3. 3,412
    4. 5,214

     

14. “The quantity of heat required to raise or lower the temperature of one pound of water by one degree Fahrenheit” is a description of what?
    1. One joule
    2. One calorie
    3. One watt
    4. One BTU

     

Answer Key: Self-Test B-1.1 is on the next page.