Translations:Adventist Youth Honors Answer Book/Nature/Dunes/5/en
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4. Explain the following dune formations: barchans, star dunes, linear or longitudinal dunes, parabolic
Dunes arrange themselves in a variety of shapes as listed below. There are five general categories and within each category are simple, compound and complex.
Barchans
File:Barchan.jpg
Barchan Dune formation, Erfoud, Morocco
Barchans are the most mobile of all dune types, migrating many feet every year. They have what are called tips or horns pointing downwind and are wider than they are long.
