mt1 100% SOLUTIONS QUESTION AND ANSWERS 2023/2024

mt1 100% SOLUTIONS QUESTION AND ANSWER The atmosphere is composed of ___ % oxygen. 1 78 21 - ANSWER 21 If the volume of a given air mass is increased its density will ______ Increase Decrease - ANSWER decrease If the temperature is held constant and the pressure of the air is increased, its density will ______ Increase Decrease - ANSWER increase A parcel of air with the same volume at _________ is more dense than the other. Sea Level 20,000 feet - ANSWER sea level If the pressure is held constant and the temperature is increased, the density of air will ______ Decrease Increase - ANSWER decrease One NM equals approximately ____SM, 6080 feet, or ____ minute(s) of arc of a great circle. 1.15; 1 1.15; 60 .85; 1 - ANSWER 1.15;1 The standard sea-level pressure is _____mb (hPa). - ANSWER 1013.25 The standard sea-level pressure is _____inches of Hg. - ANSWER 29.92 duh _____% of the atmosphere's mass lies below 18,000 feet. 50 10 90 - ANSWER 50 Most weather phenomenon occurs in the _____. Mesosphere Tropopause Troposphere - ANSWER troposphere In the lower troposphere, pressure decreases about ___ inch Hg per 1,000 feet of altitude. 2.0 1.0 0.1 .5 - ANSWER 1.0 The average height of the tropopause in the middle latitudes is about _____feet. 40,000 36,000 56,000 26,000 - ANSWER 36000 The standard lapse rate in the troposphere is___°C/1000 feet. 1.98 3.0 3.6 4.4 - ANSWER 1.98 If ISA conditions exist, the temperature at 6,000 feet MSL will be ____ °C. -3 -4 3 1 - ANSWER 3 The tropopause is ______at the poles than at the equator. Lower Higher - ANSWER lower The tropopause is _____in winter than in summer. Lower Higher - ANSWER lower A greater pressure differential exists in 1,000 feet of altitude change at 18,000 feet than at 5,000 feet MSL. - ANSWER false A characteristic of the stratosphere is... A characteristic of the stratosphere is... a relatively even base altitude of approximately 35,000 feet relatively small changes in temperature with an increase in altitude an overall decrease of temperature with an increase in altitude - ANSWER relatively small changes in temperature with an increase in altitude Which feature is associated with the tropopause? Absolute upper limit of cloud formation Absence of wind and turbulent conditions Abrupt change in temperature lapse rate - ANSWER Abrupt change in temperature lapse rate The average height of the troposphere in the middle latitudes is 25,000 37,000 20,000 - ANSWER 37000 What is the standard temperature at 20,000 feet? -25°C -15°C -20°C - ANSWER -25C If the air temperature is +8°C at an elevation of 1,350 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level? 3,350 feet MSL 5,350 feet MSL 9,350 feet MSL - ANSWER 5350 What are the standard temperature and pressure values for sea level? 59°F and 1013.2 Hg 15°C and 29.92" Hg 15°C and 29.92" Mb - ANSWER 15C and 29.92" Hg What is a characteristic of the troposphere? The average altitude of the top of the troposphere is about 6 miles It contains all the moisture of the atmosphere There is an overall decrease of temperature with an increase of altitude - ANSWER There is an overall decrease of temperature with an increase of altitude