atmosphere ghe
TRANSCRIPT
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Layers of the AtmosphereLayers of the Atmosphere
SC 6-4.1 SC 6-4.1 SC 6-4.7SC 6-4.7
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Layers of the AtmosphereLayers of the Atmosphere
• The atmosphere is the layer of gases that surrounds the planet and makes conditions on Earth suitable for living things.
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Layers of the AtmosphereLayers of the Atmosphere
• Earth’s atmosphere is divided into several different atmospheric layers extending from Earth’s surface outward.
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Layers of the AtmosphereLayers of the Atmosphere
• The troposphere is where all the weather occurs.
• It is the closest layer to Earth’s surface.
• It is the layer we live in.
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Layers of the AtmosphereLayers of the Atmosphere
• The stratosphere is located directly above the troposphere.
• This is where the ozone layer is.
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Layers of the AtmosphereLayers of the Atmosphere
• The next layer up is the mesosphere, followed by the thermosphere, and then the exosphere.
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Layers of the AtmosphereLayers of the Atmosphere
SpaceExosphereThermosphereMesosphereStratosphere (Ozone Layer)Troposphere (Weather, Life)
Earth’s Surface
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Atmospheric GasesAtmospheric Gases
Nitrogen & Oxygen• These are the two most common gases
found in the atmosphere.• They can be found throughout all the
layers.
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Atmospheric GasesAtmospheric Gases
Ozone• Ozone is a form of oxygen• It is only found in the stratosphere
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Atmospheric GasesAtmospheric Gases
Water Vapor & Carbon Dioxide (CO2)• These are important gases for weather
conditions.• They are found in the troposphere where
weather occurs.
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Atmospheric GasesAtmospheric Gases
Trace Gases• These gases are unimportant and found
in small amounts throughout the layers of the atmosphere.
• Example: argon
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Atmospheric TemperaturesAtmospheric Temperatures
Differences in temperature are what separate each layer in the atmosphere from the one above and/or below it.
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Atmospheric TemperaturesAtmospheric Temperatures
In the troposphere:
• As altitude increases, temperature decreases
Altitude Temperature
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Atmospheric TemperaturesAtmospheric Temperatures
In the stratosphere:
• The stratosphere is cold except in its upper region where ozone is located.
Altitude Temperature
Ozone Layer
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Atmospheric TemperaturesAtmospheric Temperatures
In the Mesosphere:
• This is the COLDEST layer in the atmosphere.
Altitude Temperature
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Atmospheric TemperaturesAtmospheric Temperatures
In the thermosphere:
• Even though the air is thin in the thermosphere, it is very HOT.
Altitude Temperature
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Atmospheric TemperaturesAtmospheric Temperatures
Beyond the thermosphere is the exosphere which leads into outer space where it is very cold, because there is little to no atmosphere to absorb the Sun’s heat energy.
Altitude Temperature
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Atmospheric TemperaturesAtmospheric Temperatures
Outer SpaceExosphereThermosphereMesosphereStratosphereTroposphere
Earth’s Surface
Temperature Altitude
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Atmospheric PressureAtmospheric Pressure
• Air pressure is the force exerted by the gases pushing on an object.
• Air pressure is greatest near the surface of the Earth in the troposphere.
Altitude Air Pressure
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Solar EnergySolar Energy
• Energy from the Sun is known as Solar Energy.
• Solar energy is the driving energy source for heating Earth, and circulation in Earth’s atmosphere.
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Solar EnergySolar Energy
• Some of the Sun’s energy coming through Earth’s atmosphere is reflected by gases and/or clouds in the atmosphere.
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Solar EnergySolar Energy
• The land heats up and releases its heat fairly quickly.
• Water needs to absorb lots of solar energy to warm up.
• It is the water on Earth that helps to regulate the temperature range of Earth’s atmosphere.
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Solar EnergySolar Energy
• Solar energy that is absorbed by Earth’s land and water surfaces is changed to heat that moves/radiates back into the atmosphere (troposphere) where the heat cannot be transmitted through the atmosphere so it is trapped, a process known as the greenhouse effect.