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“THE NEED TO KNOW” VOCABULARY (S/O TO WALE Troposphere Layer closest to the Earth’s surface

Tropopause Thin layer on top of the troposphere

Jet Stream Strong eastward winds

Stratosphere The layer above the Troposphere

Chapman Reactions How Ozone is produced

Chlorofluorocarbons Kills Ozone

Stratopause Thin layer above stratosphere,

sudden decrease in temperature

Mesosphere The layer above the Stratosphere

Thermosphere The hottest layer

Solar Radiation Main cause of atmospheric heating

INTRODUCTION TO ATMOSPHERE

Gaseous layer of the Earth, formed 4 billion years ago.

Started off with water vapor, carbon monoxide, carbon dioxide, hydrochloric acid, methane, ammonia, nitrogen, and sulfur gases.

The lack of free oxygen caused the atmosphere to reduce.

Water vapor eventually rained down forming bodies of water.

The bodies of water became home to the first organisms which began releasing oxygen, thus oxidizing the atmosphere.

CHAPMAN REACTIONS O2 + UV → 2O

O + O2 → 03 Ozone Production 03 + UV → O + O2 Ozone Destruction O + O2 → 03 Ozone Production 03 + O → O2 + O2 Ozone Destruction

STRUCTURE 71% Nitrogen, 28% Oxygen, 1% Water vapor, argon and carbon dioxide.

Troposphere, Stratosphere, Mesosphere, and Thermosphere layers.

THE LAYERS Troposphere- the lowest layer of Earth's atmosphere and site of all weather on

Earth.

Stratosphere- the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower

boundary of the mesosphere).

Mesosphere- the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in

altitude

Thermosphere- the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous

medium. The thermosphere is characterized throughout by an increase in temperature with height.

POST-PRESENTATION QUESTIONS

What are the layers of the atmosphere?

A majority of the Atmosphere is composed of which gas?

Describe how the atmosphere was oxidized.

How may ways can ozone be produced? Destroyed?