Swap to an LED — Full Week

Quick quiz

These ask about details you only notice by really doing the task. Get every one right to pass.

1. 1. Lowering the thermostat by 1°C typically cuts heating energy by about…

   About 50%Nothing — it only saves money5–10%Less than 0.5%

2. 2. Why should you decide what you want before opening the fridge?

   Cold air spills out and the fridge works to cool down againThe light bulb overheatsFood spoils instantly when exposedIt resets the thermostat

3. 3. After unplugging idle chargers, which device usually still draws standby power when left plugged in?

   A battery-free wall clockA disconnected extension cordA TV or console with a standby lightA wooden lamp switched off at the wall

4. 4. You opened the curtains instead of using lights. When does that save the least?

   On a dark, overcast late afternoonOn a bright morningAround middayWhen the room faces the sun

5. 5. Which light bulb uses the least energy?

   LEDOld incandescentHalogenThey're all the same

6. 6. Unplugging chargers helps by…

   NothingStopping wasted standby powerMaking them fasterUsing more power

7. 7. Which of these is the best first step for less waste?

   Reduce what you useThrow it in any binBuy a new oneBurn it