• Гідрологія і Гідрометрія
• Господарське право
• Економіка будівництва
• Економіка природокористування
• Економічна теорія
• Земельне право
• Історія України
• Кримінально виконавче право
• Медична радіологія
• Методи аналізу
• Міжнародне приватне право
• Міжнародний маркетинг
• Основи екології
• Предмет Політологія
• Соціальне страхування
• Технічні засоби організації дорожнього руху
• Товарознавство продовольчих товарів

Structure of atmosphere

ATMOSPHERE is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. Air is the name given to atmosphere used in breathing and photosynthesis. contains roughly (by volume) 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%.

FORMATION OF ATMOSPHERE

ü The air is rather stable in the bottom layer of atmosphere. There is oxygen in the air, which breaks into atoms under the influence of ultraviolet rays on 200-1000-km height.

ü Light gases increase above100 km, helium and hydrogen prevail in high-level: part of molecules breaks into atoms and ions, forming atmosphere.

Physical properties of the air:

1. temperature,

2. density,

3. pressure,

4. water vapor,

5. movement.

These properties are changing with height.

Atmosphere is divided into the following layers:

ü troposphere

ü stratosphere

ü mesosphere

ü thermosphere

ü exosphere

TROPOSPHERE

ü is the lowest portion of Earth's atmosphere, there is the air;

ü contains roughly 80% the mass of the atmosphere;

ü Troposphere’s thickness above poles reaches 9 km, above temperate zone – 10-12 km, and above equator – 15-17 km. The clouds and fogs appear and the weather is formed.

STRATOSPHERE

ü stretches to 50-55 km height.

ü In connection with absorption of the solar radiation by ozone, presenting in the air, temperature rise during the height increase in this layer.

ü Ozone is situated at a height of 25-30 km and forms the ozone layer.

MESOSPHERE

ü is the layer where most meteors burn up upon entering the atmosphere.

ü extends from the stratopause to 80–85 km.

ü Density of the air is lower in 200 times, and temperature settles.

THERMOSPHERE

ü There is the highest temperature in the upper layer that is why this layer is called thermosphere.

ü Thermosphere is divided into the ionosphere and exosphere.

EXOSPHERE

ü The outermost layer of Earth's atmosphere extends from the exobase upward

ü Composition: hydrogen and helium

Читайте також:

1. Agriculture. The branch structure
2. Company Structures.
3. Comparison of patterning and fabric structures
4. Create a folder structure
5. Divergences in the semantic structure of words
6. HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR
7. Hydrosphere and its structure
8. II. Listen to the tape and fill in the gaps with the correct figures concerning the structure of E. coli
9. Knitted structures
10. Lexical meaning and its structure.
11. MARKET STRUCTURE
12. Organisational structure

Переглядів: 560