Unplug the Vampires — Full Week

Quick quiz

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

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

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

2. 2. Why do screens before bed make it harder to fall asleep?

   Screens use too much electricityBlue light and stimulation delay the sleep hormone melatoninIt doesn't affect sleepPhones heat the room

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

   When the room faces the sunAround middayOn a bright morningOn a dark, overcast late afternoon

4. 4. How long before bed do experts suggest putting screens away?

   About 30–60 minutes1 minute5 hoursRight as you lie down

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

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

6. 6. 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

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

   HalogenOld incandescentThey're all the sameLED