clouds. what are clouds?
TRANSCRIPT
CLOUDS
What are clouds?
http://retards.org/photography/dimage/photographs/2001/10/08/20011008_173048-800.jpg
Clouds are visible masses of ice particles or water droplets
suspended in air.
They are not a gas!!!
What does it take to make a cloud?
Cloud Ingredients:
1 – Water Vapor
All clouds are made from water vapor that has condensed from the air.
Cloud Ingredients:
2 – Dew Point Temperature
Air must be cooled to its dew point for condensation!
Cloud Ingredients:
3 – Condensation Nuclei
A solid surface on which condensation can take place.
How do condensation
nuclei get into the air?
Dust Storms
http://www.mountwashington.org/notebook/images/drought/dust-storm.jpg
ash
Pollution (smoke)
Forest Fires- smoke
How do cloud droplets
form?
Vapor
Coalesces
Cloud Formation:
1. Warm, moist air rises.
2. Rising air cools to its dew point.
3. Water vapor condenses on particle to form liquid cloud droplets.
* Clouds can only form in warm rising air!
Resources• http://www.cs.wisc.edu/~sastry/calendar/clouds.jpg• http://retards.org/photography/dimage/index.php?keyword=sky&nav=keyword• http://apollo.lsc.vsc.edu/classes/met130/notes/chapter6/graphics/drop_cloud_ccn.gif• http://vortex.plymouth.edu/precip/CCN1.jpg• http://www.life.uiuc.edu/bio100/lectures/s97lects/05Succession/ruapehu.jpg• http://www.climatesolutions.org/images/burningFossil.jpg• http://www.jonesctr.org/research/graphics/forest_fire.jpg