Who's On First?
|Link to Resource:||https://ucmp.berkeley.edu/fosrec/BarBar.html|
|Resource Type:||Classroom Activities; Curricula and Instruction|
|Organization:||University of California Museum of Paleontology (UCMP)|
|Summary:||"Scientists have good evidence that the earth is very old, approximately four and one-half billion years old. Scientific measurements such as radiometric dating use the natural radioactivity of certain elements found in rocks to help determine their age. Scientists also use direct evidence from observations of the rock layers themselves to help determine the relative age of rock layers. Specific rock formations are indicative of a particular type of environment existing when the rock was being formed. For example, most limestones represent marine environments, whereas, sandstones with ripple marks might indicate a shoreline habitat or a riverbed. By correlating fossils from various parts of the world, scientists are able to give relative ages to particular strata. This is called relative dating. Relative dating tells scientists if a rock layer is """"older"""" or """"younger"""" than another. This would also mean that fossils found in the deepest layer of rocks in an area would represent the oldest forms of life in that particular rock formation."|
|Earth Science Big Ideas:||Big Idea 2|
|NGSS Discplinary Core Ideas:||LS4.A|
|NGSS Performance Expectations:||HS-LS4-1; MS-LS4-1; MS-LS4-2|
|NGSS Science and Engineering Practices:||Analyzing and interpreting data; Obtaining, evaluating, and communicating information|
|NGSS Crosscutting Concepts:||Patterns|
|Subjects:||6-8; 9-12; fossil; geology; high school; middle school; paleontology|
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