1. By: Michael Hilliard

2.  Happens when air is compressed or expanded
 When expands it cools and when it compresses
it warms
 As you travel father up in the atmosphere the
atmosphere pressure decreases because there
are fewer and fewer gas molecules
http://www.bio.georgiasouthern.edu/bio
-
home/harvey/lect/lectures.html?flnm=ab
el&ttl=Introduction&ccode=rm&mda=scrn

3.  Large land masses (mountains) block air
 Form clouds and rain
 Air goes up mountain
 http://www.waterencyclopedia.com/Ce-Cr/Climate-
Moderator-Water-as-a.html

4.  Masses of warm and cold air collide
 Associated with specific storm called middle
latitude cyclones
 Cooler denser air acts as a barer
http://www.geo.hunter.c
uny.edu/~tbw/wc.notes/
4.moisture.atm.stability/fr
ontal_wedging.htm

5.  Air flows together in lower atmosphere results
in lifting
 Forming clouds
 Mid afternoon thunderstorms when solar heat
is added
http://www.tetration.org/Tetration/
Convergence/index.html

6.  Pockets of air warmed more than others
 Rising thermals
 Great for hang gliding
 Make clouds mid afternoon rain showers
https://www.meted.ucar.edu/sign_in.ph
p?go_back_to=http%253A%252F%252Fww
w.meted.ucar.edu%252Fnorlat%252Fsnow
%252Flake_effect%252Fprint_whole.htm

7.  As air rises temps drop
 Denser air sink to original spot
 Stable air results vertical movements
http://dowwolff.custhelp.com/app/ans
wers/detail/a_id/2387/~/polyox-
storage-stability,-bulk-polymer-and-
tablets

8.  Water vapor in air changes to a liquid
 Must be a surface to condense on-condensation
nuclei for air dew
 Occurs at dew point
http://decorating.visitacasas.com/how-
to-combat-condensation/

9.  Classified by their form and height.
 Three types cirrus, cirromulus, Cirrostratus.
http://cloudjournal.blogspot.com/2007/1
1/cross-winds.html

10.  Cirromulus consist of fluffy mass
 Cirrostratus clouds are flat layers
http://cloudjournal.blogspot.com/2007_1
1_01_archive.html

11.  Altocumulus clouds consist of a rounded mass,
larger and denser
http://en.wikipedia.org/wiki/File:Alto
cumulus_clouds2_-_NOAA.jpg

12.  Three members Stratus, Stratocumulus, and
nimbostratus
 Uniform,fog-like layer
http://forums.canadiancontent.net/scienc
e-environment/76416-invasion-bubble-
clouds.html

13.  Bases in low height rang but extend upward all
related and have unstable air
 All related and unstable air
http://www.free-online-private-pilot-
ground-school.com/Aviation-Weather-
Principles.html

14.  No physical deferens between fog and a cloud
 Forms from radiation cooling or movement of
air over a cool surface
 Also forms when water vapor is added to cause
saturation
http://photoshoptutorials.ws/photoshop-
tutorials/photo-effects/fog.html

15.  Pure water droplets- Which don’t freeze until
-40 c
 Upward movement triggers acceleration
http://www.free-online-private-pilot-
ground-school.com/Aviation-Weather-
Principles.html

16.  Water absorbing partials takes water vapor
from air
 Large droplets collide with small droplets
https://www.meted.ucar.edu/sign_in.ph
p?go_back_to=http%253A%252F%252Fww
w.meted.ucar.edu%252Fhydro%252Fbasic
_int%252Fflash_flood%252Fnavmenu.php
%253Ftab%253D1%2526page%253D2.2.2

17.  Rain is- droplets that fall from the cloud that
have a diameter of .05 mm
 Snow forms in-between 4c and -5c degrease
http://ofb.net/~niniane/rainsnow/

18.  Sleet is the fall of small particles of clear ice
 Glaze also known as freezing rain happens
when raindrops become supercooled
http://www.kidsgeo.com/geography-for-
kids/0118-freezing-rain.php