Unplug the Vampires — Group Edition

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…

   5–10%Less than 0.5%About 50%Nothing — it only saves money

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

   The light bulb overheatsIt resets the thermostatFood spoils instantly when exposedCold air spills out and the fridge works to cool down again

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

   1 minuteAbout 30–60 minutesRight as you lie down5 hours