Meteorology Quiz 1

Question 1) What are the primary gases make up the atmosphere and what are the percentages?

78% Hydrogen, 21% Oxygen, 1% Other gases

78% Nitrogen, 21% Oxygen, 1% Argon

83% Nitrogen, 16% Oxygen, 1% Other gases

78% Nitrogen, 21% Oxygen, 1% Other gases

Correct! Wrong!

The majority of the atmosphere is Nitrogen. Take care not to confuse this with Hydrogen!

Question 2) An area on a synoptic chart appearing as a “V-shaped” extension of a low pressure area is called:

Ridge

Occlusion

Trough

Col

Correct! Wrong!

A trough is an extension of a low pressure area. Most troughs bring clouds, showers, and a change in wind direction.

Question 3) The surface wind at Coventry is 120/10 kt, what would the wind be at 2000 ft?

030/25 kt

080/25 kt

160/20 kt

160/10 kt

Correct! Wrong!

In the Northern hemisphere wind veers and increases with altitude. This is due to the fact that wind near the surface is affected by surface friction, the affect of this decreases with the increase in altitude.

Question 4) What is the minimum distance at which any rapidly growing CB should be avoided?

10 NM

20 NM

5 NM

30 NM

Correct! Wrong!

Cumulonimbus clouds are associated with very strong updrafts and downdrafts, these can be hazardous to aircraft of any size. Therefore such clouds should be avoided by at least 10 nautical miles.