I.J.K9 Flashcards
(7 cards)
1
Q
- Which will weigh the least?
A
35 parts of dry air and 65 parts of water vapor. (more water vapor = less air weight)
2
Q
- Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temp and pressure?
A
Relative humidity.
3
Q
- The speed of sound in the atmosphere?
A
Changes with a change in temp.
4
Q
8474-1. The speed of sound in the atmosphere is most affected by variations in which of the following?
A
Ambient temp.
5
Q
- Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?
A
High temp and high humidity.
6
Q
- What is absolute humidity?
A
The actual amount of the water vapor in a mixture of air and water.
7
Q
- The temp to which humid air must be cooled at constant pressure to become saturated is called?
A
Dewpoint.
