Unequal heating of the Earth's surface causes air temperatures to change without a change in energy. This leads some parts of the Earth to be warmer or cooler than others. When warm air rises and is blocked or forced upward by cooler air, various cloud types can form through condensation. Precipitation occurs through processes like collision-coalescence in warm clouds or Bergeron process in mixed-phase clouds, forming rain, snow, sleet, hail, or freezing rain depending on temperature.

2. -Air temperatures changing with no
change in energy
http://www.summitcds.org/chem1vt/we
btext/energetics/CE05.html

3.  When places on the Earth, such as
mountains, block the air flow, which leads up
to the air rising
http://www.nc-
climate.ncsu.edu/edu/k12/.LiftingMecha
nisms

4.  Process when cold air blocks out cold air to let
warm air rise
http://www.sleepingdogstudios.com/Net
work/Earth%20Science/ES_18.2_files/fra
me.htm#slide0014.htm

5.  When air is met by other air and is forced in an
upward direction
http://ww2010.atmos.uiuc.edu/(Gh)/gui
des/mtr/cld/dvlp/cnvrg.rxml

6. Unequal heating of the Earth’s surface
Some parts of the Earth are warmer than others
due to darkness of an object
Some parts of the Earth are cooler than others due
to light on an object
https://www.meted.ucar.edu/sign_in.ph
p?go_back_to=http%253A%252F%252Fww
w.meted.ucar.edu%252Fdot%252Fprint.ht

7.  Air that doesn’t move; remains in its original
spot
 Unstable air often rises
http://ocw.usu
.edu/Forest__R
ange__and_Wil
dlife_Sciences/
Wildland_Fire_
Management_a
nd_Planning/U
nit_7__Atmosp
heric_Stability_
and_Instability_
1.html

8.  Air must be saturated for any type of
condensation such as dew, fog, or clouds
 Condensation happens above the ground
 There are tiny particles on the surfaces for
water-vapor condensation
http://keep3.sjfc.edu/students/kes00898/
e-
port/condensation%20page%20for%20unit

9. http://www.prwatch.org/spin/2011/08/
10943/study-about-clouds-effect-global-
warming-debunked
 Cirrus clouds are white and thin clouds. There
also delicate and wispy
 Cumulus clouds are rounded. They have a flat
bass and appearance of rising domes or towers
 Stratus clouds are mainly sheets or layers
which cover most of the sky. There are no
specific individual clouds

10.  There are three types of high clouds which
include cirrus, cirrostratus, and cirrocumulus
 Cirrocumulus clouds are fluffy
 Cirrostratus clouds are flat layers
http://scienceray.com/biology/weird-
and-wonderful-of-nature-cloud-

11.  Altostratus clouds create a white to grayish
sheet covering the sky with the sun or moon
 There may be occasionally a light drizzle or
light snow
http://eo.ucar.edu/kids/sky/clouds2.htm

12.  Stratus clouds are fog like layers of clouds that
usually cover most of the sky
 Stratocumulus clouds have a scalloped bottom
that looks as long parallel rolls or broken round
patches
 Nimbostratus clouds are rainy clouds
http://www.wunderground.com/blog/Bl
izzard92/comment.html?entrynum=32&th
eprefset=BLOGCOMMENTS&theprefvalu

13.  Clouds that don’t fit into the category of high
clouds, middle clouds, or low clouds
http://www.free-online-private-pilot-
ground-school.com/Aviation-Weather-
Principles.html

14.  The result of radiation cooling, or the
movement of air over a cold surface
 When water vapor is added to the air and is
saturated, fog can occur
 Fog is a cloud with its base at or very close to
the ground
http://en.wikipedia.org/wiki/File:Marine
_Fog_Pattern_1.jpg

15.  Water is super cooled when it is below -0
degrees celsius
 When air is saturated it is supersaturated to ice
 The Bergeron process relies on two physical
processes which are super cooling and super
saturation
http://atm.ucdavis.edu/mmg/atm60_200
5/note/precipitation.htm

16.  Warm clouds form raindrops in the collision-
coalescene process
 Salt can lower water vapor temperatures from
the air at relative humidities under 100 percent
http://www.rainmanweather.com/site/p
roducts/RG-206-Brush-RG202-Rain-and-
Snow-Gauge

17. http://p
hysicswo
rld.com/
cws/arti
cle/news
/42517
 Drops of water that fall from a cloud and have
a diameter of at least 0.5 mm.
 When the ground temperature is above four
degrees celsius, snowflakes will melt and turn
into rain before reaching the ground
 At low temperatures ice crystals will form
http://www.rgbstock.
com/photo/mfms7Zq
/

18. Sleet is the falling of small particles of clear ice
Glaze is just known as freezing rain
Hail is made in the cumulonimbus clouds
http://www.kaiserroof.com/hail/
http://community.acstechnologies.com/2
011/01/through-rain-sleet-or-snow/