Earth’s Shield Open Response

High above our heads is an invisible layer that quietly protects every living thing on Earth. This engaging reading passage introduces students to the ozone layer and explains how it blocks most of the Sun’s harmful ultraviolet (UV) rays before they reach the planet’s surface. Readers also discover how the ozone layer was damaged by human-made chemicals, why scientists became concerned, and how countries around the world worked together to help it recover.

This worksheet builds informational reading skills while introducing important Earth science concepts through clear, age-appropriate explanations. Students strengthen vocabulary with terms such as ozone layer, stratosphere, ultraviolet (UV) rays, CFCs, and Montreal Protocol. Written in a friendly, conversational style, the passage helps readers understand why protecting something they cannot even see is so important for life on Earth.