Which of the following would not commonly be found in an alluvial fan? very roun

Question

Which of the following would not commonly be found in an alluvial fan?

very rounded grains

flash flood deposits

sand and gravel

poorly sorted sediments

The most common and abundant landforms in deserts are created by

strong winds

the action of animals

flowing water

plate tectonics

A parcel of air is forced upward over a mountain. The initial air temperature is 75oF and it has a dew point temperature of 53oF. At what elevation will clouds begin to form?

4000 feet

2000 feet

10,000 feet

It is impossible to tell with this limited information.

very rounded grains

flash flood deposits

sand and gravel

poorly sorted sediments

The most common and abundant landforms in deserts are created by

strong winds

the action of animals

flowing water

plate tectonics

Explanation / Answer

Very rounded grains are not commonly found in an alluvial fan beacuse these are deposited by gravity slides from the adjacent mountain slides. These grade down the fan into conglomerate and crudely bedded argillaceous pebbly sandstones and siltstones.These grade down to poorly sorted massive or flat bedded pebbly sandstones. These beds are deposited from flash floods and pass downslope to the alluvium of braided channel systems. For pebbles to be round in size it shouls come from a large distance but here it is not possible.

The most common landforms in deserts are created by strong winds because here no water flows and wind only blows which creates sand dunes and move these dunes from part to another.

To frame a cloud, a package of air must be lifted (by a lifting component) until the point that its temperature measures up to its dew point temperature (the air allocate then soaked). The motivation behind why the bundle winds up immersed is on account of the climbing package is getting to be cooler at a rate of 10 degree C for every kilometer (while it is as yet dry). This implies we are bringing down the SVP as the bundle rises (as it were, the climb and cooling is decreasing the aggregate sum of water the package can hold). Once the package achieves immersion at the lifting buildup level the slip by rate changes in light of the fact that once the T = Td, the bundle is at limit (or soaked) and cant hold any more water. The package is as yet rising however in light of the fact that it is being constrained up by a lifting instrument and on the grounds that it is as yet rising and cooling, the measure of water that bundle can keep is as yet going down. All the overabundance water needs to go some place and it is dense out into cloud beads. Accordingly the water being dense out, inactive warmth is discharged to the bundle. This arrival of dormant warmth is the thing that decreases the slip by rate to 6 degree C for each kilometer and the outcome is around 6 degree C for every kilometer. So,the elevation at which clouds will form will be 4000ft as 75 degree F is 24 degree celsius approximately and 53 degree F is 12 degree celsius approximately so there is a net difference of 12 degree C in temperature. So from the information given above it is concluded that the elevation is 4000ft.

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