When I published my first Energy Quiz over a year ago, a reader posted the comment: “I want another quiz.” Okay — we aim to please.
Remember, using Google for research is cheating. Answers are at the bottom of the page.
1. Evaporative coolers:
a. Perform better in a dry climate than a humid climate.
b. Perform better in a humid climate than a dry climate.
c. Don’t work very well anywhere in the U.S.
2. To insulate basement walls in Climate Zone 6 with XPS, what is the minimum thickness required by the 2006 IRC?
a. One inch.
b. Two inches.
c. Three inches.
3. When home inspectors see tongue-and-groove ceiling boards:
a. They smile, because tongue-and-groove boards are a natural (and green) choice for ceilings.
b. They smile, because 3/4-inch-thick boards add to a ceiling’s R-value.
c. They become concerned, because such ceilings often lack an air barrier.
4. The wall and roof insulation used in the hut erected in 1910 by Robert Falcon Scott at Cape Evans in Antarctica was:
b. Quilted seaweed
5. In a Florida home with an unconditioned attic:
a. It’s helpful to bury attic ducts in a deep layer of cellulose insulation.
b. Burying attic ducts in cellulose insulation can lead to moisture problems.
6. The soil used in a typical “green” (vegetated) roof:
a. Has a significant R-value, greatly improving the insulating value of the roof.
b. Has a low R-value — less than required for a typical roof — and is more expensive to install than conventional insulation.
7. The process whereby the moisture content of a porous (hygroscopic) building material increases is referred to as:
a. Capillary action.
8. Of all the windows sold in Sweden in 2002:
a. 20% were triple-glazed.
b. 50% were triple-glazed.
c. 80% were triple-glazed.
9. The 2009 IRC requires builders:
a. To install triple-glazed windows.
b. To conduct a blower-door test or complete an air-sealing checklist.
c. To meet the Passivhaus standard.
10. For a 2,000-square-foot house with four occupants, a bathroom exhaust fan that moves 100 cfm of air:
a. Is too small to provide mechanical ventilation for the house.
b. Provides the right amount of mechanical ventilation for the house.
c. Moves twice as much air as is needed for mechanical ventilation of the house.
11. If the interior of your home is at 70°F and 35% relative humidity, then condensation will begin to form on your windows when the temperature of the interior pane drops to about:
12. In a house with storm windows:
a. It’s better for the primary window to be as tight as possible and the storm window to be a little leaky.
b. It’s better for the primary window to be a little leaky and the storm window to be as tight as possible.
13. A home inspector notices that the brick chimney used to vent a gas water heater is saturated with water and showing freeze/thaw damage. He also notices that a white powder is accumulating at the bottom of the chimney. These are clues:
a. That the flue is too small.
b. That the flue is too big.
14. Condensation of flue gases leaving the burner of a 92% AFUE furnace:
a. Is normal.
b. Is a sign that the burner needs to be adjusted.
15. A magazine ad for an in-floor hydronic heating system shows a photo of a baby crawling on a warm floor. The baby is being heated:
a. By radiant heat.
b. By convection, conduction, and radiation.
16. If light-colored carpeting at a bedroom doorway has a dark-colored stripe as wide as the door, one can conclude:
a. The door is always closed when the homeowner vacuums the floor.
b. The subflooring under the stain is probably damp.
c. The bedroom is being pressurized by the home’s forced-air system.
17. Which of the following is an example of sublimation?
a. Moisture under a concrete footing is drawn to the top of the concrete wall.
b. A layer of snow on the floor of a cold attic evaporates without melting.
c. Air-conditioned drywall accumulates moisture driven into the wall by sunlight on the siding.
18. Curry combs are used to groom horses. On the job site, they are also useful for:
a. Raking attic insulation.
b. Untangling electrical cords.
c. Trimming cured closed-cell spray foam.
19. Which of the following is true?
a. It’s impossible to remove dried latex paint from a hardwood floor.
b. Housewrap tape will remove globs of Tremco acoustical sealant from skin.
c. Cured spray foam (for example, from an aerosol can) can be removed from skin with warm water and Ajax cleanser.
20. Compressing a fiberglass batt to half the thickness shown on the label:
a. Doesn’t change the insulation’s R-value per inch.
b. Increases the insulation’s R-value per inch.
c. Decreases the insulation’s R-value per inch.
Answers: 1: a. 2: c. 3. c. 4: b. 5: b. 6: b. 7: c. 8: c. 9: b. 10: c. 11: a. 12: a. 13: b. 14: a. 15: b. 16: c, and maybe a. 17: b. 18: c. 19: b. 20: b.
For those who missed it, here’s a link to Martin’s First Energy Quiz.