Lights Out Patrol — Three Days Running

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

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

   On a dark, overcast late afternoonAround middayWhen the room faces the sunOn a bright morning