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The National Park Service brings you information on geologic time and how we tell the age of the Earth. Learn about fundamental geologic concepts, view a geologic time module, view a video on the Big Ideas in Geoscience, and look at fossils and rocks throughout geologic time.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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2
In this lesson, students examine seismic evidence to determine a) Earth must have a layered internal structure and, b) estimate the size of Earth’s core. Using an inquiry approach, students are divided into two teams (theoreticians and seismologists) to test the simplest hypothesis for what is...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
Classroom Activities Curricula and Instruction
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