Curated OER
Deforming Earth's Crust
A short and straightforward slideshow presentation is a great addition to your lesson on plate tectonics. With demonstrative diagrams and helpful facts, the presentation helps to reinforce a concept that can be a little tricky for...
Curated OER
Structure of the Earth
Eighth graders examine the forces that are constantly acting on the Earth. They describe the theory of tectonic plates and demonstrate the two kinds of earthquake waves. They also examine the role of volcanoes in the structure of the...