Annenberg Foundation
Annenberg Learner: Interactives: Rock Cycle: How Rocks Change
Find out how rocks and rock layers change with erosion and weathering.
Science Education Resource Center at Carleton College
Serc: Density of Earth Materials
Students compare the densities of six different rocks/minerals collected from different environments, and then predict which rocks have the highest and lowest densities. Then they construct and test their hypothesis by calculating the...
CK-12 Foundation
Ck 12: Earth Science: Principle of Horizontality
[Free Registration/Login may be required to access all resource tools.] Rules for sedimentary rock formation.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: What's Down There?
Students build a model to learn about the cycle of erosion and deposition by water and wind which deposits layer upon layer of rock, soil, and organic material to the surface.
US Geological Survey
U.s. Geological Survey: Graded Bedding [Pdf]
This activity introduces students to the concept of sorting materials in different mediums and the sedimentary feature called graded bedding. Students will discover that water is a good medium to separate and sort particles and that...
Untamed Science
Untamed Science: Biology: Evolution: How to Become a Fossil
Learn about what a fossil is, the different types that scientists use for study, and processes that form them. [2:57]
Utah Education Network
Uen: Nhmu: Our Ancient Earth the Stratigraphy Cup
Activity provides students an opportunity to make a stratigraphy cup.
University of California
University of California Museum of Paleontology: Uniformitarianism
Read about the pioneers in Earth's geologic history and their discovery of how the process of uniformitarianism shaped the study of evolution.
Science Struck
Science Struck: What Is Graded Bedding?
Explains what graded bedding is and how it forms in sedimentary deposits.