Sci-Five | The Hindu Science Quiz: On sand and sandstorms – NSP NEWS

Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form

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Sand is usually made of Silica. Also called silicon dioxide (SiO2), it is the compound that makes up most of the earth’s crust.

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Sandstorm, also called dust storm, is a meteorological phenomenon common in arid and semi-arid regions. They arise when a gust front or other strong wind blows loose sand and dirt from a dry surface.

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Namib desert’s singing sand is also called whistling sand, barking sand or singing dune, The sound emission is caused by wind passing over dunes or by walking on the sand.

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Sand spout is a pillar of sand, similar in appearance to a waterspout, raised by the strong inflowing and ascending currents of a whirlwind of a small radius.

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