Author Question: What are ventifacts? How are multiple facets formed on ventifacts? Where are they found What will be ... (Read 62 times)

Charlie · **on:** Jul 15, 2018

What are ventifacts? How are multiple facets formed on ventifacts? Where are they found What will be an ideal response?

Question 2

Briefly explain why sand is moved by wind before clay and silt during wind erosion. What will be an ideal response?

asdfasdf · **Reply #1 on:** Jul 15, 2018

Answer to Question 1

Venitfacts are stones with polished, pitted, grooved, or faceted surfaces caused by wind abrasion. If the
wind blows from different directions, the ventifacts will have multiple facets. Ventifacts are most
common in deserts, but they can also form on beaches or outwash plains if there are saltating sand
grains.

Answer to Question 2

A very thin layer of motionless air lies next to the ground, so there is less wind there. Sand grains
protrude above the surface and are more easily caught by the wind, while clay and silt grains lie closer
to the surface and will not be picked up unless the stationary layer of air is disturbed.