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Why are upper winds stronger than surface wind?
Surface winds are slowed by friction caused by topography as well as the built environment.
Is it true or false that winds are caused by differences in air pressure?
yes this is true. this is also why you can get stronger winds if the pressure gradient in the atmospshere is greater
How are transverse dunes different from barchan dunes?
Barchan dunes are solitary crescent dunes formed on a flat, hard ground with limited supplies of sand and vegetation. Transverse dunes are a series of long ridges that are found in areas that have a lot of sand but sparse vegetation.
What are BWh climates caused by. Subtropical Highs. Trade Winds. Westerlies. Warm Ocean Currents. None of these?
Subtropical Highs
Do agents of erosion create deposits called dunes?
yes, sand dunes are deposited by wind
Is Barchan dunes are created by strong onshore winds?
Barchan dunes are crescent-shaped dunes that are formed by winds blowing consistently in one direction. These winds are typically strong and blow a constant supply of sand, causing the dunes to migrate downwind.
What erosional force can make sand dunes?
The force of winds shapes sand dunes.
What is a hill of sand broken by winds?
Sand dunes
What causes deserts dunes?
Wind moving sand causes dunes, both in the desert and at the beach.
Was sand dunes formed by erosion or deposition?
sand dunes are caused by deposition . some people think its caused by erosion , but erosion is the braking down of land formations. sand dunes are caused by strong winds pushing sand grains into piles.
Why are sand dunes formed at the northern end of beaches on the east coast of Australia?
Because the Southerly winds shape the dunes. The dunes are primarily formed over winter when Southerlies are prevalent.
Photographs of the surface of Mars reveal the presence of sand dunes that shift over time. These dunes demonstrate the presence of what phenomenon on Mars?
winds
When winds blow steadily from the west sand dunes will be steepest on the?
east side.
What is caused by a wave depositor?
sand dunes
Why does sandstorms occur?
This wind is usually caused by convection currents (which are created by intense heating of the ground), and is usually strong enough to move entire sand dunes. Air is unstable when heated, and this instability in the air will cause the mixture of higher winds in the troposphere with winds in the lower atmosphere, producing strong surface winds.
What are huge piles of sand called?
Huge piles of sand are called sand dunes. Sand dunes typically form in deserts or coastal areas where there are strong winds that shape and move the sand into these large structures.
What causes sediment that is picked up by the wind to fall to the ground?
This wind is usually caused by convection currents and is usually strong enough to move entire sand dunes. Air is unstable when heated, and this instability in the air will cause the mixture of higher winds in the troposphere with winds in the lower atmosphere, producing strong surface winds.
