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Mars has a thin atmosphere which is very dry and high speed winds develop on Mars. We also know that these winds pick up fine dust from the Martian surface and transport this round the planet (we have seen this happen in out telescopes).
We know on Earth that when this sort of event (desert sandstorms) happens the interaction between the wind and the planet's surface causes eddies and that these slow the wind locally. When the wind slows, its load (the Martian dust) is deposited. These deposits are Mars' dune features.
What else can I help you with?
What planet has sand dunes?
Mars
Are sand dunes on mars?
Yep
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
What 2 planets have sand dunes?
Mars and Earth.
What processes together form dunes and valleys and deltas?
Erosion and Depositionerosion causes dunes and valleysdepostion causes deltas
What causes the sand dunes to move?
The wind causes movement
Are sand dunes common on Mars?
Yes, most of the surface is sand.
What planets have sand dunes?
Mars and Earth.
What causes sand dunes to move?
wind
What causes the sand dunes in Michigan?
glaciers
Sand dunes demonstrate the presence of what phenomenon on Mars?
I'd have to go with "wind."
What causes dune?
Wind moving sand causes dunes, both in the desert and at the beach.
