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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
Published in 1994
Students often ask how scientists know that the continents have moved. This activity about the apparent wandering of the North Pole provides good evidence that the continents do indeed move.
Grade Level   9 10 11 12
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3
This activity has been devised to address the common lack of knowledge about geological time. Research has shown that many people have no idea of the great length of geological time nor of the order of key events during the geological history of the Earth. Students will make a geological timeline...
Grade Level   9 10 11 12
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4
While the 'Principle of superposition of strata' states that younger rocks are found above older ones, there are certain unusual geological conditions causing older rocks to be found on top of younger ones. Through this activity, pupils can model the unusual geological conditions where the...
Grade Level   10 11 12
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5
Children model how the Moon’s volcanic period reshaped its earlier features.  The children consider that the broad, shallow impact basins — which had formed earlier while it was a “kid Moon” — contained cracks through which magma seeped up. Children use Rice Krispies Treats® to create a...
Grade Level   5 6 7 8
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6
Children, ages 8–13, embark on an exploration of Earth's and the Moon's shared history in this 30 –minute introductory activity for the Explore! Marvel Moon module. They work in groups to determine the order of geologic events  — such as the formation of the Moon and when the bright crater of...
Grade Level   3 4 5 6 7 8
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7
"This hands-on activity requires students to """"visit"""" different K-T boundary sites, evaluate the evidence at each site, find these sites on a map, and predict where the crater is located. It tests a diverse set of skills, including mapping, mathematical scaling, and interpretation of mixed...
Grade Level   6 7 8 9 10 11 12
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