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Earth is the water planet. Nowhere else in this galaxy or beyond has liquid water
been found. This unique substance is essential to life on Earth. It is found in
oceans so vast that light glistening from their surface can be seen from the far ...
Tides are the daily rise and fall of the ocean's water level caused by the
gravitational pull of the moon and sun on the earth. More responsive than a solid,
the ocean water is pulled by the moon to one side of the earth. As the earth and
Recent studies support the theory of sea-floor spreading, according to which
molten rock from the earth's core rises upward along the mid-ocean ridge
spreading toward the continents. Once thought to be as old as the earth itself, the
rock on ...
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review