ATMOSPHERIC PRESSURE AND ALTIMETRY

Question 1

ATMOSPHERIC PRESSURE

Answer 1

THE FORCE PER UNIT ARE EXERTED BY THE WEIGHT OF THE ATMOSPHERE, AIR PRESSURE IS EXERTED IN ALL DIRECTIONS

Question 2

BAROMETER

Answer 2

(TORRICELLI) INSTRUMENT USED TO MEASURE PRESSURE

Question 3

ANEROID BAROMETER

Answer 3

PARTIAL VACUUM CREATED IN A METAL CELL, WHICH CONTRACT AND EXPANDS AS PRESSURE CHANGES

Question 4

STATION PRESSURE

Answer 4

THE PRESSURE MEASURED AT AN AIRPORT

Question 5

PRESSURE VARIATION

Answer 5

ATMOSPHERIC PRESSURE VARIES WITH ALTITUDE, TEMPERATURE, AND WATER VAPOR

Question 6

TEMPERATURE EFFECT ON PRESSURE

Answer 6

AS TEMPERATURE INCREASES PRESSURE DECREASES

AS TEMPERATURE DECREASES PRESSURE INCREASES

Question 7

SEA LEVEL PRESSURE ANALYSES (SURFACE CHART)

Answer 7

SHOWS LINES CONNECTING POINTS OF EQUAL PRESSURE (ISOBARS)

IDENTIFIES PRESSURE PATTERNS

Question 8

CONSTANT PRESSURE SURFACE

Answer 8

A SURFACE ALONG WHICH THE ATMOSPHERIC PRESSURE IS EQUAL AT A GIVEN POINT

Question 9

RAWINSONDE OBSERVERATIONS

Answer 9

UPPER AIR OBSERVATIONS INCLUDING PRESSURE, TEMPERATURE, RELATIVE HUMIDITY AND WINDS ALOFT

Question 10

CONSTATN PRESSURE SURFACE ANALYSIS

Answer 10

CHART CONNECTING POINTS OF EQUAL HEIGHT, CHARTS ARE SPECIFIC TO A CONSTANT MILLIBAR PRESSURE

Question 11

ATMOSPHERIC DENSITY

Answer 11

RATIO OF MASS OF AIR TO THE VOLUME

Question 12

VOLUME EFFECTS ON DENSITY

Answer 12

DENSITY AND VOLUME ARE INVERSELY RELATED

Question 13

CHANGES IN AIR DENSITY

Answer 13

DENSITY IS EFFECTED BY MASS, PRESSURE, OR TEMPERATURE

Question 14

DENSITY EFFECTS ON PRESSURE

Answer 14

DENSITY AND PRESSURE ARE DIRECTLY RELATED

Question 15

TEMPERATURE EFFECTS ON DENSITY

Answer 15

DENSITY AND TEMPERATURE ARE INVERSELY RELATED

Question 16

WATER VAPOR EFFECTS ON DENSITY

Answer 16

DENSITY AND WATER VAPOR ARE INVERSELY RELATED

Question 17

ALTIMETRY

Answer 17

ESSENTIALLY A BAROMETER READING IN UNITS OF ALTITUDE RATHER THAN PRESSURE

Question 18

TRUE ALTITUDE

Answer 18

IS THE VERTICAL DISTANCE ABOVE MSL

Question 19

INDICATED ALTITUDE

Answer 19

SHOWS ALTITUDE AT PRESSURE RATHER THAN MEASURING HEIGHT ABOVE SEA LEVEL OR GROUND
COLD AIR: TRUE WOULD BE LOWER THAN INDICATED
WARM AIR: TRUE WOULD BE HIGHER THAN INDICATED

Question 20

PRESSURE ALTITUDE

Answer 20

IS ALTITUDE BASED ON THE STANDARD PRESSURE OF 29.92’ HG

Question 21

DENSITY ALTITUDE

Answer 21

IS PRESSURE ALTITUDE CORRECTED FOR NON STANDARD TEMPERATURE
IT IS INDIRECTLY RELATED TO ATMOSPHERIC DENSITY
HIGHER DENSITY ALTITUDE EQUALS WORSE PERFORMANCE