Transcript Global Climate Change

Global Climate Change
TIC-TAC-TOE Review Game
Directions: You and your partner select 9
vocabulary terms from the list below and write
them in the Tic-Tac-Toe boxes in Game 1 and
Game 2
CFCs
N2O
Greenhouse gases
Global Climate Change
H2O
CH4
CO2
Troposphere
Ozone Depletion
Kyoto Protocol
Greenhouse effect
Greenhouse Effect
Absorption of infrared radiation by atmospheric
gases and re-radiation of the energy back
towards Earth
H2O (Vapor)
Although it is the most common greenhouse
gas, it only persists in the atmosphere for
about 9 days
Kyoto Protocol
This international agreement to reduce
climate change was enacted in 2005, It
required industrialized countries to reduces
greenhouse gas emissions to 5% below their
1990 levels between 2008 and 2012
Ozone Depletion
Though there is not technically a “hole”, it has
been reduced by 30% over Antarctica.
Global Climate Change
A consequence of this process: Rising sea
level due to melting glaciers and melting sea
ice
CO2
This greenhouse gas increases in the
atmosphere when we have increased
deforestation and fossil fuel combustion
Troposphere
Much of the radiation emitted by the earth is
captured and trapped here
N2 O
Greenhouse gases
CFCs
CH4
N2O
H2O
CO2
CFCs (Chlorofluorocarbons)
Global Climate Change
Changes in the average weather that occurs
in an area over a period of years or decades
CH4 (Methane)
This gas is a more potent greenhouse gas than CO
2
Greenhouse gases
Trap Earth’s heat in the troposphere which
warms the atmosphere and Earth’s surface.
CO2
Global Climate Change
This greenhouse gas readily dissolves in water and
much has been absorbed by the world’s oceans.
This has led to ocean acidification which causes
coral bleaching and reduction of phytoplankton in
oceans.
Troposphere
Most photochemical smog forms here
Ozone Depletion
N2 O
Released as a result of intensive use of inorganic
fertilizer, burning fossil fuels, animal waste
management, and sewage treatment
H2O (Vapor)
This greenhouse gas absorbs more
infrared radiation from Earth than any
other molecle
CFCs (Chlorofluorocarbons)
Anthropogenic chemicals that are made
primarily of chlorine and fluorine atoms
attached to a carbon backbone
Greenhouse effect
CH4 (Methane)
Sources of this greenhouse gas include:
Cattle flatulence
Fossil fuel mining / extraction
Landfills
Wastewater treatment
Swamps
Rice cultivation (paddies)
Kyoto Protocol
The United States and Australia did not sign
this treaty because of its potential economic
impact and it did not require developing
countries such as China and India to reduce
greenhouse gas emissions
Greenhouse gases
Anthropogenic sources include:
Burning fossil fuels
Agricultural practices
Deforestation
Landfills
Industrial production of new chemicals
CFCs (Chlorofluorocarbons)
This substance has the greatest greenhouse
warming potential because it is nonreactive in
the troposphere and insoluble in water (so it
isn’t washed out of the atmosphere with rain).
It can catalyze the removal of an oxygen
atom from ozone over and over again.
Global Climate Change
Consequences of this phenomenon include:
Loss of Biodiversity
Melting permafrost
Increase in severe / extreme weather
Changes in ocean currents
Changes in vegetation zones
Rise in sea level
Troposphere
Global climate change is of great concern
here since this is where weather events occur
CO2
Natural product from the complete
combustion of hydrocarbons (fossil fuels)
N2 O
 Though it is naturally occurring, this
greenhouse gas can persist in the upper
atmosphere for about 100 years until it is
destroyed. It is 300 time more powerful
than CO2.