explain why the great basin of the western us is dry. what term is applied to these locations? April 03, 2022 Geologic processes powered past the air current are called __________ processes. barchan coriolis eolian yardang Turbulence of air increases in proportion to the ___________ of the air flow. book velocity acceleration altitude Due to the Coriolis outcome, any current of air or h2o is deflected to the ____ in the northern hemisphere and to the _____ in the southern hemisphere. east ... eastward east ... westward westward ... east west ... w The Earth rotates from _______ to _______ . west ... eastward due east ... w north .... southward southward ... north Sand grains saltating in air tin jump higher than sand grains saltating in water considering ___________ . water is less dense than air air is less mucilaginous than h2o current of air velocity is faster than h2o velocity grains are suspended in air longer than they are in water Which of the following is an important source of dust? volcanic dust from eruptions clay minerals from soils organic sources, including charcoal, pollen and bacteria all of these Cantankerous beds in a lithified dune dip to the west. During deposition of the sand, the prevailing winds were probably from the __________ . east west north southward Big dune fields, or seas of sands, are called _______ . draas barchans regs ergs Deserts with a pebble surface are chosen _________ . draas barchans regs ergs Which of the following are not related to air current erosion? loess ventifact deflation blowout The loess deposited in the upper Mississippi Valley was derived primarily from ________ . volcanic dust desert regions lying to the west glacial deposits coastal sand dunes Why does volcanic dust tend to travel further than wind-blown dust derived from the continents? because volcanic dust is erupted loftier into the atmosphere because volcanic dust is less dense than dust derived from the continents considering volcanic dust is composed of quartz whereas dust derived from the continents is composed of feldspar all of these The Great Basin and Mojave deserts of western North America exist primarily _________ . because they lie near the equator because they prevarication thousands of kilometers from the bounding main because they prevarication in the rainshadow of coastal mountains all of these Much of a desert'southward surface consists of sand, gravel, and rock rubble because _________ . clay minerals course slowly in a desert environment air current blows abroad clay and soil before it can accumulate to groovy thickness vegetation is sparse and cannot prevent erosion of soil all of these Which of the post-obit would you least await to find in a desert? playa lakes rounded, soil-covered hills steep river valleys and gorges dune fields Which of the following is not a current of air deposit? pediment sand dune loess all of these are wind deposits A broad, gently-sloping platform of bedrock that is left behind as a mountain front is eroded is called a(n) ___________ . pediment alluvial fan mesa erg Wind speeds of 117 kilometers per hour or more institute a _______ moderate to potent cakewalk moderate to strong gale whole gale to storm hurricane In temperate zones of the Earth betwixt xxxo and threescore o breadth, the prevailing winds come from the ________. north south eastward due west In the figure above, the letters A through D correspond current of air names. Which of the following is false? A and B stand for the "westerlies" A and C correspond "merchandise winds" C and D represent "merchandise winds" none of these statements are imitation Ripples are more often than not oriented ________ to the current direction parallel 30 degrees 45 degrees perpendicular In a big dust storm, approximately how much grit can 1 cubic kilometer of air conduct? 1 ton 10 tons 100 tons k tons Fine-grained dust particles from the eruption of Mr. Pinatubo remained in the atmosphere for how long? 1 - two months 3 - iv months ane -two years iii - 4 years White Sands National Monument contains sand dunes made up of _________? quartz gypsum organic sources including pollen and bacteria feldspar What is the master cause of frosting on the surface of quartz sand grains? impacts with other sand grains chafe by air currents wearisome dissolution past due none of these Which of the following statements is false? current of air is a more effective erosion amanuensis in moisture climates wind is a more effective erosion amanuensis in dry climates wind is an equally effective erosion agent in wet and dry climates wind does not cause erosion The process by which the ground surface is lowered past wind erosion is called _______. deflation inflation ablation none of these Which of the following will non accelerate deflation? established vegetation construction motor vehicle tracks plowing How does desert pavement class? by intense chemical weathering past stream erosion by intense mechanical weathering by wind erosion Yardangs are: sand dunes arranged in long, parallel rows eroded bedrock with long, parallel grooves long, parallel ridges eroded by dust none of these Which of the post-obit promote the development of sand dunes? potent winds a supply of loose sand dry out climate all of these Sand will accrue ___________. on the lee side (downwind) side of a bedrock on the windward side (upwind) of a boulder on both the lee side and the windward side of a bedrock boulders cannot cause sand to accumulate Given the relative positions of the sand dune and rock shown here, the wind direction is predominantly ___________ northward to south to north east to west west to east The steeper, downwind side of a sand dune is called a _________. sand migrate ventifact sideslip face up streamline A cantankerous bed preserved in an eolian sandstone represents _________. the top of a former sand dune the bottom of a former sand dune the upwind side of a sometime sand dune the downwind side of a old sand dune This sand dune is a _______ dune barchan transverse blowout linear The air current direction which would create this dune is __________. northward to south south to north eastward to west west to east In a barchan dune, the points of the crescent indicate ______ and the slip face is the ________ downwind bend of this dune upwind .... concave upwind .... convex downwind .... concave downwind ..... convex Sand dunes behind beaches are typically_______. barchan transverse barchans linear dunes During erosion loess tends to break off __________. in horizontal layers in vertical sheets along irregular cracks slowly, grain by grain Which of the following is non related to wind erosion? loess ventifacts deflation blowouts Long sand ridges that are more or less parallel to the prevailing air current are called ______. barchan dunes linear dunes transverse dunes blowouts Through geologic time the interior of Commonwealth of australia has inverse from a moist, humid climate to a desert because plate collisions have congenital mountains most the coast line which block wet-begetting winds from the continent's interior Australia has moved due north into an barren, subtropical zone Australia has moved southward out of the office of the more than boiling trade winds the continent has grown through volcanic activity making the interior too far away from moisture-bearing winds Radar imaging from the space shuttle Endeavor has provided bear witness that the Sahara Desert __________. has ever been an arid environment was in one case tropical with many different types of vegetation in one case had an extensive organization of river channels which are now dry has sand dunes in excess of 300 g in meridian The transformation of semi-barren regions into deserts is chosen _______. deflation deforestation detoxification desertification What minerals are responsible for the orange-brownish colors of weathered surfaces in the desert? quartz alkali feldspar iron oxides all of these Approximately what percentage of the globe's deserts are covered with sand? 5% twenty% 50% 100% A wadi is a ________ shallow lake playa with salt sediments dry out wash inundation deposits A mesa is __________ flood deposit in a modest dry wash a flat plateau surrounded by steep cliffs mountain showing horizontal sedimentary layering a pediment with an alluvial fan embrace callinanwastre.blogspot.com Source: https://uh.edu/~jbutler/physical/chap14mult.html Share :