Wind as an Agent of Change
Feb 24, 2016
Practice Bell Quiz• 1. Winds of at least _________ km/h are needed to
move sand grains.
• 2. The side of a ventifact that faces the steady wind direction wears into a smooth flat surface called a __________.
• 3. If the bottom of a blowout reaches the water table, what can stop further deflation? ____________
• 4. How is loess different from sand? (Compare grain size and travel mechanism)
• 5. The ends of a barchan sand dune point ____________.
• 6. The ends of a parabolic sand dune point ____________.
• 7. A transverse sand dune is ______________ to the direction of the wind, where as longitudinal sand dune is ____________.
• 8. Another name for the leeward side of a sand dune is _____________.