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Great Lakes for Kids
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Facts About the Great Lakes
Geology
Exploring the Past
Paleozoic Era
Mesozoic Era
Cenozoic Era
North American Terrain
Formation of the Lakes
Core Sampling
Fossil Records
Hydrology
The Water Cycle
Salty Versus Fresh
Water Movement
Eutrophication
Paddle-to-the-Sea
Special Features
Estuaries
Forest Fires
Niagara Falls
Sand Dunes
Shipping
Shipwrecks
For the Teacher
Unit Schedule
Great Lakes for Kids
Core Sampling
To find clues to the past, scientists take core samples. They drive tubes into the ground then pull up samples of the layers.
Sediments build up slowly. A geologist can look at hundreds or thousands of years of history with one sample.
Core Sampling in Lake Superior Video
Image was purchased from Deposit Photos
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