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The Franklin Institute
Franklin Institute: How Sedimentary Rock Is Formed
The Franklin Institute describes the way sedimentary rock is formed, with links to descriptions of several types of sedimentary rocks.
Science Struck
Science Struck: Guide to Mechanical Weathering and Its Major Types
Describes the different types of mechanical weathering and how each of them breaks down rocks.
CK-12 Foundation
Ck 12: Earth Science: Weathering and Erosion
[Free Registration/Login may be required to access all resource tools.] Describes how solid rock is worn down through weathering.
Other
Western Oregon University: Earth System Science: Geologic Time [Pdf]
An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...
Science Education Resource Center at Carleton College
Serc: An Investigation Into Geologic Mapping: Quarry Park
In this geology field lab, students will map an area around Quarry 12 and Quarry 13 in Quarry Park. Using a field notebook, students will take field observations to later produce a basic geologic map, topographic map, and a...
CK-12 Foundation
Ck 12: Earth Science: Mechanical Weathering
[Free Registration/Login may be required to access all resource tools.] Describes various types of mechanical weathering.
PBS
Pbs Learning Media: Volcanism
Volcanoes are one of the most dynamic, powerful, and visible forces on Earth. This interactive resource adapted from the National Park Service uses images to describe different types and parts of volcanoes, volcanic rocks, magma, and...