Good or Bad? Open Response

Not all ozone is found in the same place-and that makes a big difference. This engaging reading passage explores the difference between “good” ozone high in the stratosphere, which protects life from harmful UV rays, and “bad” ozone near the ground, which contributes to air pollution and can affect human health. Students learn why location matters and how the very same molecule can have two very different jobs.

Readers practice comparing and contrasting scientific concepts while expanding their understanding of Earth’s atmosphere. Vocabulary including stratosphere, ground-level ozone, air pollution, ultraviolet radiation, and atmosphere appears naturally throughout the passage. Written in a teacher-friendly, conversational style, this worksheet helps students grasp an important environmental concept without overwhelming scientific language.