ATSC Exam 3 Questions and Answers

ATSC Exam 3 Questions and Answers Differences in station pressure are strongly influenced by changes in what? - Answer-Elevation Are pressure differences much greater vertically than horizontally? - Answer-Yes Because small height variations cause large changes in pressure what needs to be corrected? - Answer-Station pressure Station pressure is normally adjusted to a pressure at 0 meters this is reffered to as what? - Answer-Mean sea level (MSL) What is the adjusted station pressure called? - Answer-Sea-level pressure (SLP) Near the Earth's surface, pressure decreases by how much? - Answer-10mb/100m We add 10mb/100m of elevation to get SLP. - Answer-True Adjusted sea-level pressure readings from weather stations can be plotted on what? - Answer-A surface map What are line connected points of equal pressure called? - Answer-Isobars Isobars are normally drawn in what intervals? - Answer-4mb intervals Isobars show areas of surface low and high pressure systems. - Answer-True Constant heigh is... - Answer-Sea-level or 0 meters What are constant pressure charts called? - Answer-Isobaric maps Are constant pressure charts commonly used in forecasting and weather analysis? - Answer-Yes Levels of constant pressure are called what? - Answer-Isobaric surfaces Variations in density and temperature will cause changes in what? - Answer-Pressure Lines of constant height on a constant pressure chart are called what? - Answer-Contour lines or isoheights Warm temperatures aloft are usually associated w/ what? - Answer-Higher heights The contour lines usually decrease from south to north because air temperatures typically decrease from south to north. - Answer-True When bends in contour lines are to the south it is called what? - Answer-A trough