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Science -- Earth science
6 - 10
Plate Tectonics: The Hawaiian Archipelago
Since the Hawaiian Islands were all created by volcanic activity, it is somewhat surprising that only the island of Hawaii now possesses any active volcanoes. Why did the volcanoes that built the other islands stop...
What Causes the Gulf Stream?
Even with the waves lapping at their feet, few people consider ocean currents and their importance to global climate. Although the Gulf Stream cannot be seen flowing by off North America's East Coast, in Western Europe,...
Enhanced F Scale for Tornado Damage
This is an update to the original Fujita Scale for wind speeds and tornado damage. The Enhanced F-scale uses three-second gusts estimated at the point of damage based on a judgment of 8 levels of damage to the 28...
The Orphan Tsunami of 1700: Japanese Clues to a Parent Earthquake in North America
This text relates a scientific detective story through clues from both sides of the Pacific. In the year 1700, a mysterious tsunami flooded fields and washed away houses in Japan. It arrived without the warning that a...
Carbon Cycle Diagram
This diagram illustrates some of the most abundant stores of carbon and identifies some of the pathways in the carbon cycle along which carbon is transferred from one form to another. Long-term sinks of carbon are...
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