Condensation

1. CONDENSATION
• Occurs when a gas condenses back into a liquid.
• Conditions Needed:
1. The cooling of Air to the dew point.
• Dew Point is the temperature at which air is saturated and
condensation will take place.
2. Solid surface to condense and stick to. BILL,BILL,BILL,BILL!
F-18

2. CLOUD IN A BOTTLE EXPERIMENT

3. CONDENSATION SUMMARY
• Write a summary explained the conditions needed
in order for water vapor (humidity) to become liquid
water (condensation).
Humid air is cooled to its dew point and condenses around dust
particles in the atmosphere. Clouds form when millions of these
droplets collect. When this droplet gets too heavy for the air to keep
it suspended. It will fall to the ground as precipitation.

4. What is a cloud?
Clouds: groups of tiny water drops.
AIR RISES AIR COOLS
AIR
CONDENSES

5. 4 Ways to get air to rise.
• Warm air rising quickly as
the sun heats up the
ground.
Convection
• Air rises up over a mountain.
Orographic Lifting
•Two air masses
collide and one
rises over another.
Frontal Lifting
•Wind hits from
opposite directions
and goes up.
Convergence

6. Convective Lifting

7. Orographic Lifting

8. Frontal Lifting

9. Convergence

10. Air rises and cools through the troposphere

11. Cooling air causes it to Condense
1. Air cools by expanding.
2. Cooling air increases Relative Humidity.
3. Air becomes full of water } SATURATED
4. Water condenses out of the air onto a solid surface (Condensation
Nuclei). GAS  LIQUID
Clusters of water
drops are called
clouds.

12. Summary: Cloud Formation
AIR RISES AIR COOLS
AIR
CONDENSES
1. Convection
2. Orographic Lifting
3. Frontal Lifting
4. Convergence
1. By expanding Cools to the dew
Point and water
vapor condenses
around
condensation
nuclei.