when a substance goes directly from a solid state to a gaseous form the process is known as sublimation.
when a substance goes directly from a solid state to a gaseous form the process is known as sublimation.
when a substance goes directly from a solid state to a gaseous form the process is known as?
sublimation
Na
Na
sometimes other features appear near gullies. at the base of some gullies there may be depressions or curved ridges. these have been called "spatulate depressions." these depressions form after glacial ice disappears. steep walls often develop glaciers during certain climates. when the climate changes, the ice in the glaciers sublimates in the thin martian atmosphere. sublimation is when a substance goes directly from a solid state to a gas state. dry ice on earth does this. so when the ice at the base of a steep wall sublimates, a depression results. also, more ice from higher up will tend to flow downward. this flow will stretch the surface rocky debris thereby forming transverse crevasses. such formations have been termed "washboard terrain" because they resemble the old fashioned washboards. the parts of gullies and some associated features of gullies are shown below in a hirise images.
phaethontis quadrangle