The Earths Atmosphere Characteristics of the Atmosphere The

Characteristics of the Atmosphere • The Atmosphere is a mixture of gases that surround

Composition of the Atmosphere • Besides the main two gases Nitrogen and Oxygen, the

Atmospheric Pressure • Air pressure is the measure of the force with which the

Pressure • The Atmosphere is held in its position by the gravity of the

Air Temperature • As you pass through the atmosphere, air temperature changes to warmer

Layers of the Atmosphere • The Earth’s atmosphere is divided into five layers- the

Troposphere • the layer of the atmosphere nearest Earth’s surface • where all weather

Stratosphere • Is very thin and contains little moisture • Is extremely cold (-60

Mesosphere • Is the coldest layer of the atmosphere (-93° C) • Meteors burn

Thermosphere • Temperatures can reach 2, 000 degrees Celsius • The temperature here is

Exosphere • Different regions of this layer make long distance communication possible • Satellites

A way to remember the layers of Earth’s Atmosphere! • • • Troposphere Stratosphere

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The Earth’s Atmosphere

Characteristics of the Atmosphere • The Atmosphere is a mixture of gases that surround the earth • The Atmosphere protects us from the harmful rays of the sun.

Composition of the Atmosphere • Besides the main two gases Nitrogen and Oxygen, the atmosphere also contains liquids and small solids • The most common of the liquids in the atmosphere is water.

Atmospheric Pressure • Air pressure is the measure of the force with which the air molecules push on a surface • As you move farther from the earth the air pressure decreases

Pressure • The Atmosphere is held in its position by the gravity of the earth • Gravity pulls the gas molecules towards the earth which gives them weight • As you move farther from the earth the air pressure decreases • Altitude is the height of an object above the earths surface

Air Temperature • As you pass through the atmosphere, air temperature changes to warmer or colder conditions

Layers of the Atmosphere • The Earth’s atmosphere is divided into five layers- the troposphere , the stratosphere, the mesosphere, thermosphere, and the exosphere

Troposphere • the layer of the atmosphere nearest Earth’s surface • where all weather occurs • temperature is warmest near the ground and decreases as you go higher, (as altitude increases, temperature decreases )

Stratosphere • Is very thin and contains little moisture • Is extremely cold (-60 degrees Celsius) • The ozone layer which absorbs the harmful rays of sunlight is found here • Jets fly here

Mesosphere • Is the coldest layer of the atmosphere (-93° C) • Meteors burn up in this layer

Thermosphere • Temperatures can reach 2, 000 degrees Celsius • The temperature here is dependent on solar activity. • Auroras occur in this layer

Exosphere • Different regions of this layer make long distance communication possible • Satellites found here

A way to remember the layers of Earth’s Atmosphere! • • • Troposphere Stratosphere Mesosphere Thermosphere Exosphere • That Snail Missed The Exit!