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Subhana’llah: Scuba (IMAGES)

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info-pictogram1 The speed of sound in water is 1,435 m/sec – nearly five times faster than the speed of sound in air. The average depth of the Atlantic Ocean, with its adjacent seas, is 3,332 m; without them it is 3,926 m. The greatest depth,8,381 m, is in the Puerto Rico Trench.

NIAGARA FALLS (IMAGE)

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Niagara Falls were formed when glaciers receded at the end of the Wisconsin glaciation (the last ice age), and water from the newly formed Great Lakes carved a path through the Niagara Escarpment en route to the Atlantic Ocean. While not exceptionally high, the Niagara Falls are very wide. More than six million cubic feet (168,000 m3) of water falls over the crest line every minute in high flow,[4] and almost four million cubic feet (110,000 m3) on average.