SEEd - Grade 7
Lesson Plans

Strand 7.2: CHANGES TO EARTH OVER TIME

Earth's processes are dynamic and interactive, and are the result of energy flowing and matter cycling within and among Earth's systems. Energy from the sun and Earth's internal heat are the main sources driving these processes. Plate tectonics is a unifying theory that explains crustal movements of Earth's surface, how and where different rocks form, the occurrence of earthquakes and volcanoes, and the distribution of fossil plants and animals.

Standard 7.2.4

Develop and use a scale model of the matter in Earth's interior to demonstrate how differences in density and chemical composition (silicon, oxygen, iron, and magnesium) cause the formation of the crust, mantle, and core. (ESS2.A)

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