pressure quiz

Question 1

what is pressure?

Answer 1

• density x constance x temperature
• a force per area

Question 2

what is horizontal pressure variation?

Answer 2

takes a shorter column of dense/cold air to exert the same surface pressure as a taller column of less dense/warm air

Question 3

what is force?

Answer 3

force = mass x acceleration -> gravity

Question 4

for a barometer, what does one bar =?

Answer 4

1000mb

Question 5

what is the standard atmospheric pressure?

Answer 5

1013.25 mb
29.92 inches of mercury

Question 6

what does a mercury barometer do?

Answer 6

use columns of mercy to measure pressure

Question 7

what are aneroid barometers?

Answer 7

• no fluid
• small changes in pressure expand or contract the aneroid cell and reflect pressure changes

Question 8

what does R equal?

Answer 8

ideal gas constant

Question 9

what is sea level pressure?

Answer 9

pressures measured at sea level

Question 10

what are isobars?

Answer 10

lines of constant pressure

Question 11

sea-level chart?

Answer 11

constant height

Question 12

upper level or isobaric chart?

Answer 12

drawn on constant pressure surface
(i.e. 500mb)

Question 13

what do high heights correspond to?

Answer 13

• higher than normal pressures at a given latitude & etc.
• high temps in the layer because of changes in density

Question 14

what is Newton’s Law of Motion?

Answer 14

an object at rest will remain at rest and an object in motion will remain in motion as long as no force is executed on the object

Question 15

what are forces that influence the wind?

Answer 15

• pressure gradient force
• coriolis force
• friction
• centripetal

Question 16

what is the pressure gradient force?

Answer 16

difference in pressure over distance

Question 17

what is the coriolis effect?

Answer 17

• apparent force dye to rotation of the earth
• right in northern hemisphere and left in southern hemisphere