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Earth & Space Science

Reading Levels These books contain three developmentally appropriate reading levels for each grade span.

Low
Mid
High

Each level of the book conveys similar concepts, images, and vocabulary.

Changing Landforms

courtesy of Neal Herbert/NPS

Changing Landforms

Landforms are constantly changing. This unit helps students understand what landforms are, how they form, and how different forces shape them over time. It introduces students to Earth's structure, including the crust, mantle, and core. Hotspots and earthquake patterns are addressed, as well as how weathering, erosion, and people shape the land. The unit also addresses the three major categories of rocks--igneous, sedimentary, and metamorphic--and explains how one rock type may change into another.

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