Learner Express: Modules for Teaching and Learning
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The collision of two or more rigid tectonic plates builds mountain ranges. It deforms rock and makes surprising landforms. The transport of sediment by ice glaciers or running water not only erodes mountains away, but also creates new landforms, like Cape Cod in Massachusetts.
The Appalachian Mountains are compared to the much higher, but younger, Himalayas. View Video
Students in Mashpee, Massachusetts create a model of the ground water systems in Cape Cod. View Video
Earth's active processes of erosion and plate tectonics help explain why craters on the Earth are less visible than on its nearest neighbor, the Moon. View Video
By following sediments moved from the mountains to the sea, a mountain stream illustrates the process of erosion. View Video
Part 1 of a three-part investigation into the sediments revealed at the ocean shore in Cape Cod, Massachusetts. View Video
Part 2 of a three-part investigation: ice flowing in the form of mountain glaciers is an important source of erosion in colder climates. View Video
Part 3 of a three-part investigation: over several episodes ending about 18,000 years ago, continental glaciers formed over much of North America. View Video
A rock outcrop on Lake Champlain has two adjacent rock sections: one horizontal, one vertical. Keith Klepeis investigates a potential cause. View Video
Keith Klepeis looks for possible sources of heat and pressure that could have deformed the outcropping at Clay Point in this continuing investigation. View Video
Geologist Keith Klepeis explains how the extreme forces from a tectonic plate collision were enough to cause the folding and partial melting of the rocks on Lake Champlain. View Video
Mountains are shaped by forces from below (plate tectonics) and forces at the surface (erosion). View Video
Two continental plates collide, creating heat and pressure that bend rock and create mountain ranges. View Video