Humidity = amount of water vapor in the air

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Presentation transcript:

Humidity = amount of water vapor in the air Condensation gas → liquid Humidity = amount of water vapor in the air

Cloud Formation Saturation depends on the temperature of air: cold air room temperature hot air less capacity to hold water vapor holds about 1% of greater capacity to hold water vapor atmosphere molecules moving slowly - less space between them atmosphere molecules moving quickly - more space between them Relative Humidity = ratio of water vapor in air relative to how much it can hold Dew point = temperature to which air must be cooled to reach saturation

Drawing dew point!

Saturation = point at which air holds as much water vapor as it can Cloud Formation Saturation = point at which air holds as much water vapor as it can Not saturated Saturated Beyond Saturated it could hold more it can’t hold this much

Cloud Classification Cloud Shapes Shape Feature Nimbus Low, gray rain clouds Cumulus Flat Base, rising dome = Califlower Stratus Sheets or layers Cirrus Thin, wispy, ice crystals = high

Cloud Formation Condensation nuclei = small particles (dust, particles, spores, aerosols) around which cloud droplets can form if density is high enough it becomes visible air cools as it rises if gravity overtakes it becomes precipitation

Processes that lift air 1. Orographic Lifting 2. Frontal Wedging When mountains block the flow of air forcing it up. When warm air is lifted at a front, two different densities 3. Convergence 4. Convective Lifting When air flows together and rises, similar densities When unequal surface heating causes pockets of air to rise, parking lot next to park

Cloud Project Separate sections to keep it organized! Name of Cloud Explanation of the Root words within the name Characteristics of the Shape of the Cloud Location of the Cloud in the Atmosphere Does the Cloud Produce Precipitation? Creative Rendering of the Cloud - Color, Materials, etc. Picture of You Interacting with Cloud - Airplane, Hot Air Ballon, Superhero...etc Cloud Shapes Shape Feature Nimbus Low, gray rain clouds Cumulus Puffy or lumpy Stratus Sheets or layers Cirrus Thin, wispy, or stringy