S-290 EVALUATION EXAMS ALL SET QUESTIONS
AND ANSWERS SURE A+
✔✔what cause the atmosphere to become more unstable - ✔✔heating from below
cooling the upper potion of the atmosphere
✔✔what is and inversion - ✔✔air temp increases with height
✔✔what do inversion do to wild land fires - ✔✔inactivity
✔✔frontal lift is - ✔✔lifting produced when two air mass converge
✔✔jet stream - ✔✔strong lifting produced by diverging winds and low air pressure aloft
✔✔thermal lift - ✔✔the rising of air currents as a result of surface heating
✔✔orographic lift - ✔✔air that is forced to rise as it is pushed against the mountainous
terrain
✔✔three ingredients of a thunderstorm - ✔✔a lifting mechanism
instability
moisture
, ✔✔spreading out of a cumulonimbus or thunderstorm cloud is called - ✔✔an anvil
✔✔mature stage of the thunderstorm is - ✔✔when they up and down drafts
when lighting and thunder are first observed
✔✔stratus cloud is - ✔✔an indication of stable and often moist air near the ground
✔✔cumulonimbus cloud is - ✔✔major concern to firefighters because of the potential for
strong, gusty, and erratic winds
✔✔altocumulus castellanus clouds are - ✔✔formed with turrets and is an indicator of
very unstable air at middle levels of the troposphere
✔✔altocumulus floccus - ✔✔scattered tufts with rounded and slightly bulging upper
parts
✔✔cirrostratus - ✔✔an indication of a significant weather change in the next 2 to three
days
✔✔altocumulus lenticularus - ✔✔stable air at middle level of the troposphere, and it is
often associated with gusty winds in the lee of mountain ranges
✔✔clouds form in layers are - ✔✔stable
✔✔gusty wind are - ✔✔unstable
✔✔smoke column spreads out in all direction after limited raise - ✔✔stable
✔✔clouds grow vertically - ✔✔unstable
✔✔average lapse rate for temperatures - ✔✔3.5 degrees per 1000ft
✔✔temps decreases with an increase in elevation when an inversion is present -
✔✔False
✔✔adiabatic laps rates are - ✔✔5.5 degrees per 1000 ft dry 3.0 wet
✔✔what happens in the daytime with a canyon radiational inversion - ✔✔RH is high
temps lower
less fire activity
pollutants can accumulate
✔✔what lifting processes do thunder storm need to develop - ✔✔frontal
orographic
AND ANSWERS SURE A+
✔✔what cause the atmosphere to become more unstable - ✔✔heating from below
cooling the upper potion of the atmosphere
✔✔what is and inversion - ✔✔air temp increases with height
✔✔what do inversion do to wild land fires - ✔✔inactivity
✔✔frontal lift is - ✔✔lifting produced when two air mass converge
✔✔jet stream - ✔✔strong lifting produced by diverging winds and low air pressure aloft
✔✔thermal lift - ✔✔the rising of air currents as a result of surface heating
✔✔orographic lift - ✔✔air that is forced to rise as it is pushed against the mountainous
terrain
✔✔three ingredients of a thunderstorm - ✔✔a lifting mechanism
instability
moisture
, ✔✔spreading out of a cumulonimbus or thunderstorm cloud is called - ✔✔an anvil
✔✔mature stage of the thunderstorm is - ✔✔when they up and down drafts
when lighting and thunder are first observed
✔✔stratus cloud is - ✔✔an indication of stable and often moist air near the ground
✔✔cumulonimbus cloud is - ✔✔major concern to firefighters because of the potential for
strong, gusty, and erratic winds
✔✔altocumulus castellanus clouds are - ✔✔formed with turrets and is an indicator of
very unstable air at middle levels of the troposphere
✔✔altocumulus floccus - ✔✔scattered tufts with rounded and slightly bulging upper
parts
✔✔cirrostratus - ✔✔an indication of a significant weather change in the next 2 to three
days
✔✔altocumulus lenticularus - ✔✔stable air at middle level of the troposphere, and it is
often associated with gusty winds in the lee of mountain ranges
✔✔clouds form in layers are - ✔✔stable
✔✔gusty wind are - ✔✔unstable
✔✔smoke column spreads out in all direction after limited raise - ✔✔stable
✔✔clouds grow vertically - ✔✔unstable
✔✔average lapse rate for temperatures - ✔✔3.5 degrees per 1000ft
✔✔temps decreases with an increase in elevation when an inversion is present -
✔✔False
✔✔adiabatic laps rates are - ✔✔5.5 degrees per 1000 ft dry 3.0 wet
✔✔what happens in the daytime with a canyon radiational inversion - ✔✔RH is high
temps lower
less fire activity
pollutants can accumulate
✔✔what lifting processes do thunder storm need to develop - ✔✔frontal
orographic
