Tag: earth science

Divergent Boundary—Fast Spreading Ridge Educational

Divergent Boundary—Fast Spreading Ridge Educational

At divergent margins, lithospheric plates move in opposite directions. The plates, which include crust and part of the upper mantle, ride over the asthenosphere. As hot mantle rock rises to shallow depths, it begins to melt due to…

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What is the Moho? How was it Discovered? (Educational)

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How do scientists know that there is a boundary called the Moho that separates Earth’s thin crust from the upper mantle? First a little history on one of the greatest contributors to seismology from the early 1900s. Andrija…

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Plate Tectonics—History of How it was Discovered (Educational)

Plate Tectonics—History of How it was Discovered (Educational)

Plate tectonics theory was not accepted for centuries because no one could adequately answer the question, “What is the mechanism that drives the plates?” In the late sixteenth century. Abraham Ortelius, in compiling New World explorer maps noted…

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Are We Really 99% Chimp?

Are We Really 99% Chimp?

It’s often said that we humans share 50 percent of our DNA with bananas, 80 percent with dogs, and 99 percent with chimpanzees. Taken literally, those numbers make it sound like we could pluck one cell from a…

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The Ocean is Way Deeper Than You Think

The Ocean is Way Deeper Than You Think

The ocean is really, really deep, deeper, in fact, than most of us realize. If you were to shave off all of the land from the tops of every continent and island in the world and fill up…

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