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

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

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

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

Atmosphere Comes from the Greek words:

Earth’s protection from harmful UV rays

Keeps the planet warm through green houses gases

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

Composed of Layers: Atmosphere

Makes up all of the gases on earth

Atmosphere Extends outward about — from the surface of the Earth

Atmospheis composed of:

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

Humans live here

Nearly all weather occurs in this layer

Troposphere contains 99% of the

Air pressure decreases, temperature drops, and altitude increases

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

Protects the Earth from the impact of space debris

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

Temperature increases with altitude

Commercial jets fly here

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

Most meteors burn up in this layer

Temperature decrease with altitude, reaching as low 90°C

Air pressure is extremely low

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

Absorbs high energy x-rays and UV radiation

Thermosphere Contains

Satellites orbits this layer

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

Outermost layer with very thin air gradually fading into outer space

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

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

Not a distinct layer

Region within mesosphere and thermosphere

Responsible for phenomenon like the auroras