If you r talking about gases
Downward delivery:-collecting gases which are denser than air. e.g. carbon dioxide, chlorine.
upward delivery :-collecting gases which are less dense than air. e.g. hydrogen.
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Upward delivery refers to communication or information flowing from lower- to higher-level individuals within an organization. Downward delivery is the opposite, flowing from higher- to lower-level individuals. Both types are crucial for effective communication and decision-making within a hierarchical structure.
some gases are denser than (heavier) air e.g. CO2, HCl, H2S, Cl2. are delivered by downward delivery. while gases which are Less dense than (lighter) air e.g. H2,NH3 are delivered by upward delivery.
simultaneously the downward delivery of gas = upward displacement of air while upward delivery of gas = downward displacement of air.
No. Argon is slightly denser than air so would not be collected by upward delivery. In practice downward delivery would be unreliable as the difference in density is so small. However there is no way to prepare argon in the lab so the question is redundant.
fault block mountian
Tornadoes form during thunderstorms that occur when there is strong difference, meaning a significant difference between winds at low and high levels. The thunderstorm has updraft (upward moving air) and downdraft (downward moving air) regions. The tornado forms in a rotating part of the updraft called a mesocyclone. A downdraft wraps around the mesocyclone, causing it to tighten and intensify into a tornado.
thrust A+
Yes, folding of the crust can produce anticlines (upward-arched folds) and synclines (downward-arched folds) due to compressional forces. Anticlines are typically associated with the upward buckling of rock layers, while synclines are associated with the downward bending of rock layers.