# Final Study Guide Essay examples

5567 WordsFeb 12, 201223 Pages
ATMS-100: EXAM III REVIEW SHEET The exam will be 80 questions, multiple choice. You may use a calculator, however, CELL PHONE USE IS PROHIBITED. Please bring a #2 pencil. Study aids: This sheet, lecture notes, textbook. Learn and be able to apply concepts; do NOT simply memorize facts. Questions? Come to office hours, ask your TA, post to the discussion board on Compass. FROM BEFORE:  _What is the difference between satellites and radar? 1. Satellites: View clouds from space a. Radar: View precipitation from ground  _How is wind direction defined? 1. Wind Direction: Direction FROM which the wind is blowing a. i.e. A north wind blows from the north (toward the south) b. Stick on weather map…show more content…
 _What is a constant pressure surface? * Uniform surface temperature and pressure; parallel to constant height surfaces  _How are low and high heights related to temperature and weather? * High Heights * Warm air below pressure surface * Analogous to high pressure on constant height surface * Remember: “A high is a high” * Low Heights * Cold air below pressure surface * Analogous to low pressure on constant pressure surface * Remember: “A low is a low”  _How do you identify ridges and troughs? * A ridge is an area of higher heights or pressures * A trough is an area of lower heights or pressures  _What is the pressure gradient force? In what direction does it act? * PG = change in pressure/distance * Tightly-packed isobars (elevation changes rapidly over small distance) – strong pressure gradient * Widely-spaced isobars – weak pressure gradient * Longer arrows = stronger PGF * PGF directed from higher to lower pressure (or higher heights to lower heights on constant pressure surface) * Acts perpendicular to isobars (or heights contours) * Air wants to go from where there is more air (high pressure) to less air (low pressure) * PGF causes wind to blow  _How does the pressure gradient force influence the wind speed? * Stronger PGF yields stronger winds * Tightly-packed isobars (elevation changes