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Handout
Wikimedia

Wikipedia: Pacific Ring of Fire

For Students 9th - 10th
Wikipedia offers information on the location of the Pacific Ring of Fire, an area of frequent earthquakes and volcanic eruptions. Map included.
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Handout
Wikimedia

Wikipedia: Oceanic Trench

For Students 9th - 10th
Wikipedia provides brief information on oceanic trenches, and has a hyperlinked list of major world trenches.