The level 1 earth science manuals include 12 interesting lessons which include reading material, a quiz and a hands-on enrichment activity. The Earthquakes Manual includes lessons on earthquake waves and zones, faults, the meralli scale, therichter scale, tsunami waves and others. The crust of the Earth is in constant motion. The Earth's plates sometimes lock together and energy builds up in the rocks. When enough energy has built up, the rocks will suddenly break apart forming seismic waves that travel through the Earth. These waves are what we feel during an earthquake. Students also learn how tsunamis form and why 80% of them occur in the Pacific Ocean. This manual on CD is designed for lower elementary students.

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