IELTS Reading detail Practice
What feature of modern LED lights makes them more 'dark-sky-friendly'?
Question type: multiple choice · Difficulty: intermediate
- A. They use significantly less energy than older bulbs.
- B. They are often equipped with motion sensors.
- C. They are available in warmer colour tones with less blue light.
- D. They are easier to install in existing fixtures.
Explanation Preview
Paragraph F directly addresses this by mentioning that 'manufacturers now offer a wide range of 'warm-white' or amber LEDs (with a colour temperature below 3000 Kelvin) that are significantly less disruptive'. While other points might be true of LEDs in general, this is the specific reason given for them being 'dark-sky-friendly'.