What you'll learn
How radiation affects life and the planet.
Key ideas
- The EM spectrum and its uses and dangers.
- The greenhouse effect (gases absorb infrared) and the ozone layer (absorbs UV).
Exam tips
- Match dangers to high-frequency waves (UV, X-ray, gamma).
- Distinguish the greenhouse effect from ozone depletion.
Common mistakes
- Confusing the greenhouse effect with ozone.
- Getting the spectrum order wrong.