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Documents EARTHQUAKES. Section 19.1Forces within Earth Most earthquakes happen because the Earth’s crust...

Slide 1 EARTHQUAKES Slide 2 Section 19.1Forces within Earth Most earthquakes happen because the Earth’s crust moves along plate boundaries Usually the movement is very…

Documents Chapter 1: Waves 1.1Understanding Waves. Motion of Waves 1 An oscillating or vibrating motion in...

Slide 1 Chapter 1: Waves 1.1Understanding Waves Slide 2 Motion of Waves 1 An oscillating or vibrating motion in which a point or body moves back and forth along a line about…