Ocean Trenches — Reading Comprehension

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NGSS 4-ESS2-2

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This engaging 250-word reading passage introduces fourth-grade students to ocean trenches, the deepest parts of Earth's oceans. Students learn that ocean trenches are long, narrow valleys on the ocean floor that plunge far below the surrounding seabed. The passage explains how the Mariana Trench is the deepest place on Earth, even deeper than Mount Everest is tall. Students discover that trenches form patterns on the ocean floor, often appearing near chains of islands or along the edges of continents. The passage emphasizes that trenches are not randomly located—they follow the same zones where volcanoes and earthquakes occur. This audio-integrated resource aligns with NGSS standard 4-ESS2-2, helping students understand patterns in Earth's features. The passage uses simple, grade-appropriate language and includes bolded vocabulary terms with immediate definitions. Students explore real-world examples like the Mariana Trench and learn to recognize patterns in Earth's surface features. Accompanying activities include comprehension questions, writing prompts, and graphic organizers that reinforce understanding of ocean floor features and their relationships to other geological phenomena. This foundational knowledge prepares students for hands-on investigations and deeper exploration of Earth's structure and processes.

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