Which phrases describe air pressure? Select three options.

decreases with denser air

decreases as altitude increases

equals mass divided by volume

results from a column of air pushing on an area

decreases due to fewer air particles pushing down

B) decreases as altitude increases

D) results from a column of air pushing on an area

E) decreases due to fewer air particles pushing down

Explanation:

Pressure is given by the formulae;

P = F / A

Whereby;

P = pressure

F = Force

A = area

Remember that ...

F = Ma

Whereby;

F = Force

M = mass

a = acceleration

Therefore pressure can be given as;

P = Ma / A

The mass of the above column of a substance multiplied by the acceleration due to gravity = pressure exerted by the substance