Learner Express: Modules for Teaching and Learning
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What is a rock? Examine the underlying composition of rocks, from minerals to chemical compounds to elements, and see how naturally-occuring radioactivity can be used to date rocks. Sedimentary rocks are a special case—formed from smaller materials transported from other places. See a special type of sedimentary rock: a fossil.
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
How do geoscientists determine the approximate age of a rock? (example: Uranimum-235) View Video
One type of sedimentary rock is formed when materials such as gravel, sand, silt, and clay are deposited in new locations. View Video
The formation of two types of fossils are shown and discussed: an imprint in a rock and minerals replacing the shells of dead organisms. View Video
