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3) Rocks
7) Rock
Igneous rocks form when molten rock cools and hardens. Readers will learn how differences in composition and cooling form different types of igneous rocks. Chapters include graphic organizers to help explain topics such as mountain formation, volcanoes, and how igneous rocks fit into the larger rock cycle.
"Metamorphosis" means "change," and metamorphic rocks are rocks that have been transformed by heat and pressure. Chapters focus on explaining the forces that can change rocks, how metamorphic rocks are classified, and graphic organizers help illustrate how metamorphic rocks are part of the rock cycle.
Sedimentary rocks form from built-up layers of eroded rock and plant matter pressed together over time. At-level text and graphic organizers explore how the makeup of sediment, rock formation, and identifying different kinds of sedimentary rocks. Readers will also learn how fossils form in sedimentary rocks, and the role sedimentary rocks play in the rock cycle. The interactive eBook version features videos, graphic organizers, and photographs
...11) Igneous rocks
20) Igneous rocks
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