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Article 1 - Article 1: Plate Tectonics May Grind To A Halt,...

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Article 1: Plate Tectonics May Grind To A Halt, Then Start Again By???? What are Plate Tectonics? Plate tectonics, the geologic process responsible for creating the Earth's continents, mountain ranges, and ocean basins, may be an on-again, off-again affair. Recent study at the Carnegie Institution suggests that plate tectonics may have ground to a halt at least once in our planet's history, and may do so again. A key aspect of plate tectonic theory is that on geologic time scales ocean basins are transient features, opening and closing as plates shift. A process called subduction, where oceanic plates descend into the Earth’s mantle, consumes basins. Subduction zones are the sites of oceanic trenches, high earthquake activity, and most of the world's major volcanoes. Mark Behn from Carnegie Institution pointed out that most of today's subduction zones are located in the Pacific Ocean basin. If the Pacific basin were to close, as it is predicted to do about in 350 million years when the westward-moving Americas collide with Eurasia, then most of the planet's subduction zones would disappear with it. This would effectively stop plate tectonics unless new subduction zones start up, but subduction initiation is poorly understood. "If plate tectonics indeed starts and stops, then continental evolution must be viewed in an entirely new light, since it dramatically broadens the range of possible evolutionary scenarios," said Behn. My opinion about this article is that it is very food since they put a lot of information about what they were talking about. Not only did they give information but they made predictions. Also, they interviewed people about their opinions. Article 2: Solar homes compete, and that’s cool UC team learns valuable lesson when house is put to the test By Justin Thompson / Scripps Howard Foundation Wire The University of Cincinnati’s solar house went dim in the middle of a competition, which stopped the chances of it taking a high placing in the Solar Decathlon. The Solar Decathlon is an international competition to build the most attractive and most efficient solar-powered house. The teams get 18 months to design and build their house. Then they transport it to the National Mall in Washington. The UV team had to come up with a way to pump energy into the house. They were not prepared for the influx that comes with hundreds of visitors walking in and out of the 650 square foot home. The Polytechnic University of Darmstadt, Germany, won the competition. The effect it has on people is that they know to be more careful in making solar houses because they know
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Article 1 - Article 1: Plate Tectonics May Grind To A Halt,...

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