Pollution: Air pollution

Air

A mixture of diff gases and particles

Why is air important?

It’s essential for respiration

Photosynthesis formula

CO2 + H2O + Sunlight => C6H12O6 + O2

Respiration formula

O2 + C6H12O6 => CO2 + H2O

When is air polluted?

It’s polluted when there is a build up of harmful gases, dust, smoke, or chemicals in the air

what are the compositions of air

1. (N) Nitrogen

2. (O) Oxygen

3. (Ar) Argon

4. (CO2) Carbon dioxide

5. Others.

Weather

The state of the atmosphere at any given time or place

Meteorology

The study of the weather and the atmosphere

Atmosphere

• Gaseous portion of a planet

• The layer of air around the earth, 300miles thick

• 75% of all air

Atmosphere layers according to temp and chemistry from top to bottom

1. Exosphere

2. Thermosphere (w/ Ionosphere)

3. Mesosphere

4. Stratosphere (w/ Ozone layer)

5. Troposphere

   • All weather happens here

Troposphere air and temp levels with height?

• Gases decrease, air becomes thinner

• Temperature decrease, becomes colder

• Most clouds appear

  • 99% of water vapor is in this layer

Tropopause

The transition boundary between the troposphere and the layer above it (Stratosphere)

Stratosphere air and temp levels with height?

• Holds 19% of atmosphere’s gases

  • No air mixing

  • LITTLE WATER VAPOR

• Temperature increases

  • Oxygen molecules absorb radiation (Ultraviolet)

• Ozone layer

Mesosphere air and temp levels with height?

• Gases continue to become thinner

  • But thick enough to slow down meteorites

  • Warming by ultraviolet effect becomes less

• Temperature decreases

  • Coldest layer

• Weather balloons are released in this layer

• Burning meteors

Middle atmosphere

• Stratosphere

• Stratopause

• Mesosphere

• Mesopause

Thermosphere air and temp levels with height?

• Upper atmosphere

• Gases increasingly thin

  • Only the higher energy UV and X-ray radiation from the sun are absorbed

  • Ionosphere

  • So temp increases

  • But temp would still be cold

• Meteors are found

• Aurora, Northern and Southern Lights

Where do satellites orbit the earth?

Thermosphere

Exosphere air and temp levels with height?

• Final layer

• Air is constantly and gradually leaking out of the earths atmosphere

• No clear cut upper boundary

• Has Satellites and space stations

The atmospheres chemical layer

1. Ionosphere

2. Ozone layer

Ozone layer

• In the Stratosphere

• Blocks the harmful UV rays

Ionosphere

• In the thermosphere and Exosphere

• Blocks harmful rays

• Made up of ions

  • Charged atoms and free plasma

How does the Ha, Radio work?

The Radio waves bounce off the ionosphere, allowing to send broadcasts around the worlds

Radiosonde

Tool used for studying the upper atmosphere

How are the Radiosondes carried up?

By using weather balloons

What causes Air pollution?

1. Transport

2. Agriculture

3. Household

4. Industrial burning

5. Waste

Greenhouse gasses

• CO2

• Water vapor

• Methane