Air pressure is extremely low

Nearly all weather occurs in this layer

Earth is the only planet in the solar system that is known to contain — in all —, 1— on Earth is constant and consistent moving

Some consider it the final layer of the Earth’s atmosphere

Commercial jets fly here

Satellites orbits this layer

Responsible for phenomenon like the auroras

Outermost layer with very thin air gradually fading into outer space

A system in which there are sets of interconnected components that are interacting to form a united whole

Air pressure decreases, temperature drops, and altitude increases

Composed of four major smaller systems known as the subsystems or also called as —:

A complex system of interrelating physical, chemical, and biological processes

Makes up all of the gases on earth

Lowest layer of the atmosphere extending up to about 10km (6.2 miles)

: boundary separating Earth's atmosphere and outer space and it is the 100km mark

Earth’s protection from harmful UV rays

Keeps the planet warm through green houses gases

Contains the ozone layer which absorbs the radiation and converts it into heat

Humans live here

Temperature decrease with altitude, reaching as low 90°C

Region within mesosphere and thermosphere

Temperature increases with altitude

Composed of Layers: Atmosphere

Atmosphere Comes from the Greek words:

Not a distinct layer

Most meteors burn up in this layer

No clear upper boundary, extending up to 190, 000 km (120, 000 miles)

Protects the Earth from the impact of space debris

Affected by Earth’s gravity which is why as the ALTITUDE INCREASES the amount of GASES in the atmosphere DECREASES

Extends from the stratosphere to about 85km (53 miles) above Earth

Atmospheis composed of:

Troposphere contains 99% of the

Atmosphere Extends outward about — from the surface of the Earth

Extends the top of the troposphere to about 50km (31 miles) above the ground

Extends above the mesosphere up to 500-1000 km (311-621 miles)

Absorbs high energy x-rays and UV radiation

Thermosphere Contains