Atmospheric Pressure

Question 1

What is MSL mean?

Answer 1

Mean sea level pressure

Question 2

a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period.

Answer 2

Isobars

Question 3

Closely spaced isobars mean..

Answer 3

Steep pressure gradient and strong winds

Question 4

Widely spaced isobars mean

Answer 4

a Shallow pressure gradient and relatively light winds

Question 5

The pressure over a given distance can be difined as a:

Answer 5

Pressure gradient

Question 6

29.92 hg it’s aquel to?

Answer 6

101. 325 kpa kilopascals

1013. 25 mb millibars

Question 7

What is station pressure

Answer 7

It’s the actual weight of the column of air extending upwards from station to the outer limit of the atmosphere of the observing station

Question 8

For a change of 1000 feet of elevation make a changes of how many inch on the barometer reading

Answer 8

1 inch

Question 9

The change in pressure over a given distance can be defined as?

Answer 9

Pressure Gradient

Question 10

The closer the isobars are together …..

Answer 10

The greater the pressure gradient

Question 11

The steeper the pressure gradient ….?????

Answer 11

Stronger the wind

Question 12

What are Troughs?

Answer 12

This is a elongated(extended)area of low pressure at the surface or aloft

On a map Browns das bar associated with bad weather

Question 13

What is a windshift

Answer 13

A change in wind direction of 45 degrees or more in less than 15 minutes with sustained wind speeds of 10 knots or more throughout the

Question 14

What is a Ridges

Answer 14

These are areas of elongated(extended) high pressure with a low pressure on each side.fair weather is associated

Question 15

Anticyclonic pressure systems in the northern hemisphere represents

Answer 15

Sinking air that is rotating clockwise and flowing outward from the center

Question 16

Density altitude ?

Answer 16

This is the pressure altitude and actual temp conditions corrected for nonstandard temp variations and is the height the aircraft feels it is at above sea level

Question 17

High density altitude means

Answer 17

The aircraft feels like it is a higher altitude

Question 18

When conditions are standard pressure altitude and density altitude are???

Answer 18

The same

Question 19

When the air temp is above standard density altitude will be??

Answer 19

Higher than pressure altitude

Question 20

Pressure Gradient

Answer 20

The change in pressure over a given distance.

The distance and location of these isobars relative to one another give us important information about hoe the air is moving

Question 21

The closer the isobars are together?!

Answer 21

The greater the pressure gradient

Question 22

Aloft means

Answer 22

Higher or up in the air