CLOUDS AND PRECIPITATION

HUMIDITY FACTOR

• 100% Relative humidity = dew point.
• Then condensation occurs.

CLOUDS

• Cloud - A mass of tiny water droplets.
• Condensation nuclei- particles in the air that attract water molecules.
• Freezing nuclei- water vapor as ice crystals.

SUPERCOOLED CLOUDS

CLOUD TYPES

• Stratus, cumulus, nimbus, and cirrus
• Stratus-like clouds near ground= fog

PRECIPITATION

• Coalescence- molecules that crash together forming precipitaion

DEW AND FROST

• Dew- Water formed on the surface
• Frost- Frozen dew