Clouds. Atmosphere.

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Atmosphere. Clouds. : 

Atmosphere. Clouds.

Atmosphere = air: 

Atmosphere = air Atmosphere is a mixture of gases: 78% nitrogen 21% oxygen 1% carbon dioxide and water vapour ( пар воды) 0.9% argon The air also consists of water droplets, ice crystals, dust, ash, sea salt, cinder, plant pollen and bacteria.

Clouds in the atmosphere: 

Clouds in the atmosphere The atmosphere is 2000 km wide. When it ends, the space begins. The higher, the colder. If you fly very high, it is very cold. This is why water vapour becomes water droplets and ice crystals and the clouds are formed.

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Clouds consist of water droplets and/or ice crystals. When water evaporates from the surface, water vapor condenses and turns into liquid water. This condensation happens when warm and cold air meet.

PowerPoint Presentation: 

There are four types of clouds: Cumulus = fluffy clouds Stratus = layered clouds Nimbus = dark grey clouds Cirrus = thin feathery clouds

Cumulus clouds (кучевые облака): 

Cumulus clouds ( кучевые облака) Cumulus clouds are low in the sky. They usually mean good weather. But if they are tall, they can bring rain and thunder. They consist of water droplets and ice crystals. They are FLUFFY . You can see them on sunny days .

Stratus clouds (слоистые облака): 

Stratus clouds ( слоистые облака) Stratus clouds are low clouds. Fog is a stratus cloud on the surface of the Earth. They are grey. They can bring snow and rain. They consist of water droplets and ice crystals.

Nimbus clouds (дождевые облака): 

Nimbus clouds ( дождевые облака) Nimbus clouds bring a lot of rain and storms . They are dark and grey. They have a lot of water. Cumulonimbus are cumulus rain clouds Nimbostratus are status rain clouds

Cirrus clouds (перистые облака): 

Cirrus clouds (перистые облака) Cirrus clouds are the highest clouds . They are white and look like feathers. They mean good weather. They consist of ice crystals. They are wispy ( дымчатый). They look like horses’ tails .

Alto-: 

Alto- When the clouds are high in the sky, they get the prefix alto- : Altostratus Altocumulus

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A ceilometer is an instrument which shows how high the cloud is. It uses laser light.

Project work: 

Project work Tools: blue carton paper, cotton wool, paints, felt-tip pens, pencils, glue, mirror