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The Dynamic Earth

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Michael Morris

on 14 April 2016

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Transcript of The Dynamic Earth

Eventually creating a large hole in it.
30 years ago a harmful chemicals called Chlorofluorocarbons (CFCs) were used in many household items (fire extinguisher, fridges, hairspray, aerosol cans).
At first we didn't think they were harmful... BUT.
Once they reach the STRATOSPHERE they begin to react with the ozone layer; breaking it down. Stealing away from the ozone layer, making it weaker.
The layer of gasses that surrounds the Earth.
The Atmosphere
The 4 Layers
The ozone layer is the top of the stratosphere.
This is created naturally when 3 oxygen molecules bond together.:
This layer of O3 is called the ozone layer
The Ozone
The Dynamic Earth
The Atmosphere either
Absorbs, Reflects or Traps energy from the sun.
The Greenhouse Effect
Greenhouse Effect
78% is Nitrogen Gas
21% is Oxygen
1% other gasses
It has dust, soil, salt, ash, skin, hair, pollen bacteria, viruses and aerosols in it.
What is the Purpose of the Atmosphere?
With out the Atmosphere, the Earth would be so cold that it would be impossible to live on... We would freeze to death instantly.
Closest to Earth:
The ozone layer is responsible for absorbing almost 50%
of the Suns ultraviolet energy before it reaches the Earth.
This is good, U.V. energy is very harmful; the thinner the ozone layer, the more U.V. energy that reaches Earth's surface.
When energy is trapped by the atmospheres gas this is called
We call the

gasses that trap


Greenhouse Gasses.
With increasing greenhouse gasses, we also see and increase in climate; some scientist believe adding to much greenhouse gas to the atmosphere can result in a global climate change.
San Marcos, Tx
The ozone is also responsible for keeping the heat in... like a nice marshmallow jacket!
Trying to Prevent Greenhouse Gas Build Up
Essential Questions:
What are the 4 atmospheric layers called?
Why are these layers so important to life?
How does the atmosphere keep the Earth's temperature stable?
What is the ozone and why is it important?
The name of a musical artist.
The Atmosphere is a layer of mixed gasses that surround the Earth; mostly made of Nitrogen, Oxygen and Carbon Dioxide.
The atmosphere provides a layer of insulation around Earth; slowing how fast it looses heat. Keeping the Earth's temperature stable.
Kinda like Earth's security blanket.
The atmosphere is divided into 4 different layers; based on temperature changes.
The atmosphere is pulled towards the Earth's surface by gravity.
It is the most dense near the Earth's crust. The farther away we travel from the Earth, the less air there is.
The layer
to the surface of the Earth.
Extends about
into the sky.
In the troposphere is where the
Earth's Weather
The further away from the surface; the colder it gets.
Making the hole smaller:
Once scientist realized the cause of the damage to the ozone a meeting was held in
, world leaders met at conference to discuss the ozone issue; creating
The Montreal Protocol.
This was an agreement that
outlined specific ways to reduce and eventually stop producing CFCs by 1996.
The ozone layer both blocks and traps the Sun's radiation. Trapping the Sun's energy warms the Earth.
Conduction Vs. Convection Vs. Radiation Lab
Play close attention to all rules and direction. Don't ruin it for the whole class!
Make S'Mores in Science
Energy Transfer in the Atmosphere
3 Ways
Radiation: The transfer of energy by electromagnetic wave. Ex: Sun's Rays
Convection: The transfer of heat through air or water in a circle path. Ex: Convection Currents
Conduction: The transfer of heat though contact. Ex: Touching a hot object
Some Greenhouse Gases:
Carbon Dioxide
Burning Fossil Fuels
Methane Gas--- FARTS!!!
& CFCs
Kyoto, Japan
world leaders met to discuss the issue of
green house gases
Green House Gases (GHG) are a factor
causing the increase of global temperature.
Kyoto Protocol

is a legally binding agreement that countries must follow to

reduce their GHGs.
The goal of the Kyoto Protocol was for nations to
reduce the amount of GHGs they produce to levels lower than that of 1990.

The protocol was to be
started in 2005 and be done by 2012.
Over 180 countries have signed the agreement; but the
U.S., China and India have not ratified it.
Ratify= to make valid or put into effect.
Since 2010 CFCs have been banned in products.
The Montreal Protocol has been one of the most successful attempts to reduce harmful chemicals in the atmosphere.
The Atmosphere is also the air we breathe; with out it we would have no air... ATMO===AIR
It is also is the reason that we do not get hammered by asteroid/meteorites. It burns up all the rocks before they get to close.
The atmosphere provides the air needed for plants, insects and us to fly.
The Montreal Protocol
The Kyoto Protocol
Explain what the Montreal and Kyoto protocol are and their importance.
The Thermosphere
The furthest layer from Earth
Air molecules are so far apart you can't feel how hot or cold it is.
Reflects radio waves back to Earth so radio works and also repels ultra violet radiation.
The Aurora Borealis
The Mesophere
This is the sphere that causes meteorites to burn up.
Considered the coldest sphere= From 22 degrees F down to -220 degrees F.
Very little is known about the mesosphere.
The Stratosphere
The Ozone Layer is at the top of the Stratosphere
With out the Stratosphere and the ozone layer the Earth is inhabitable.
The higher you go, the hotter the stratosphere gets.
This is also the layer in which planes and jets fly in.
Full transcript