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The Continental drift theory is the theory that once all the continents were joined in a super continent, which scientists call Pangaea. Over a vast period of time, the continents drifted apart to their current locations. Alfred Wegener first supported continental drift.
Wegener's explanation of continental drift in 1912 was that drifting occurred because of the earth's rotation. This explanation and his theory were not widely accepted. Prior to Wegener, however, many had noted that the shapes of the continents seem to fit together, suggesting some schism in the past.
Wegener's explanation of continental drift in 1912 was that drifting occurred because of the earth's rotation. This explanation and his theory were not widely accepted. Prior to Wegener, however, many had noted that the shapes of the continents seem to fit together, suggesting some schism in the past.
Scientists believed that Earth's surface is broken into a number of shifting slabs or plates, which average about 50 miles in thickness. These plates move relative to one another above a hotter, deeper, more mobile zone at average rates as great as a few inches per year. Most of the world's active volcanoes are located along or near the boundaries between shifting plates and are called plate-boundary volcanoes.
The peripheral areas of the Pacific Ocean Basin, containing the boundaries of several plates, are dotted with many active volcanoes that forms the Ring of Fire. The Ring provides excellent examples of plate-boundary volcanoes, including Mount St. Helens.
I chose this artifact because it fits best with the information I have used for the Theory of Plate Tectonics. It shows different kinds of Plate Tectonics, the amount of active volcanoes around or near each plate, it shows the Ring of Fire, the names and locations of each Plate Tectonic.
The peripheral areas of the Pacific Ocean Basin, containing the boundaries of several plates, are dotted with many active volcanoes that forms the Ring of Fire. The Ring provides excellent examples of plate-boundary volcanoes, including Mount St. Helens.
I chose this artifact because it fits best with the information I have used for the Theory of Plate Tectonics. It shows different kinds of Plate Tectonics, the amount of active volcanoes around or near each plate, it shows the Ring of Fire, the names and locations of each Plate Tectonic.