U2L2 Flashcards
how does wind speed affect the movement of sediment?
- wind erodes soil, sand, and rock particles
- stronger wind allows it to carry more/larger sediment pieces
define desert pavement and explain its formation
rocky ground that forms when wind carries soil and fine sediment away leaving only pebbles and small rocks behind
define dune
mound of wind-deposited sand common in deserts and on shores of lakes and oceans
define loess
thick deposits of windblown, fine-grained sediment that forms fertile soil for growing crops
how is a glacier formed?
snow is compacted and turns to ice, forming a large mass of moving ice
how do glaciers shape the land?
gravity pulls them downhill and they cause erosion, scraping into the ground
when a glacier melts, it releases glacial drift (the material it’s carrying)
describe the processes of erosion and deposition by gravity
gravity influences the movement of water and ice and pulls rocks and soil downslope
define mass movement
shifting of material due o gravity
define creep
the extremely slow movement of material downslope
define rockfall
loose rocks falling down a steep slope
define landslide
sudden and rapid movement of a large amount of material downslope
define mudflow
a rapid movement of a large mass of mud
define abrasion
The grinding and wearing down of rock surfaces by other rock or sand particles
define deflation
The removal of fine sediment by wind
what depositional pattern was formed in the Moving Sediment experiment?
alluvial fan
