There are actually two kinds of deserts - hot deserts and cold deserts, However, cold deserts is further subdivided into:
Polar Deserts (eg: Antarctica)
Cold Winter Deserts (eg: Gobi Desert)
Cool Coastal Deserts (eg: Atacama Desert)
Sand, soil, rock and ice.
sand
essentially there are 2 disticnt typessubdivided into 5 catergories ; of desert according to the landscapes :Sand desert --- a wavy sand sea Stony desert --- gravel surfaces Rock desert--- bare rock surfaces with huge pavement that kept clear of sand or gravel by wind Plateau desert --- rocky plateaux , deeply eroded wadis, buttes or inselbergs (for details, please refer to Action of Rain) Mountain desert--- bare and arid arrays of jagged rock peaks ( The above landscapes can be found quite close to each other, like the desert complex in North America )Clarification:Science classifies deserts as either hot(Sahara, Mojave) or cold (Atacama, Antartica). Either desert may exhibit the landforms mentioned in the previous answer.
Cutting and polishing exposed rock surfaces. NovaNET
desert
Desert regions differ in their landscapes. Sand deserts are sandy. Stony deserts have gravel surfaces. Rock deserts have bare rock surfaces are kept clear of sand or gravel by the wind. Deserts that are rocky plateaus are Plateau deserts, and bare and ariid arrays of jagged rock peaks are Mountain deserts. Deserts also differ in the types of wildlife and plants that live in them.
There are some desert areas, marshes, swamps, farm land, and small forrests...
Any solid object has a surface, and there are almost as many types of surfaces as there are classifications of objects. Surfaces can be smooth, granular, abrasive, glossy, flat, curved, and in any shape or texture imaginable.
Oasis
An Oasis
Friction does depend on the types of surfaces involved and how hard the surfaces push together. Friction would be very minimal if the surfaces were smooth and not pushing together too hard.
I do not kmow
a type of desert with hard rocky surfaces
a type of desert with hard rocky surfaces
This is known as a ventifact. A ventifact with three pyrimidal faces is given the name Dreikanter, which when translated from German, literally means "three sided".
Desert
how hard the surfaces push to gether the types of surfaces involved
Arizona desert
Many types of plants and animals can live in a desert. People can also build cities in a desert, as long as they have some way to supply water to the city.