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Climate change

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by

My Melody

on 20 March 2013

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Transcript of Climate change

Causes:
air pollution is reflecting sunlight back into space
greenhouse gases Climate Change By: Caitlyn Bui Global Warming Global Dimming Sea level rise Ocean Acidification fossil fuels Green house gas http://www.epa.gov/climatechange/ghgemissions/gases.html Gases that trap heat in the atmosphere
Carbon Dioxide (CO2):
enters from burning wood products
result of certain chemical reactions
enters from burning fossil fuels for electricity
removed by plants when absorbed for the carbon cycle
Methane (CH4):
enters from the production of oil, natural gas, and coal
enters through the decay of organic waste in landfills
Nitrous Oxide (N2O):
enters from the burning of fossil fuels
enters from people adding nitrogen to the soil
enters when transportation fuels are burned
Fluorinated Gases:
substituting ozone depleting gases
released in the process of making aluminum http://www.epa.gov/climatechange/students/impacts/signs/sea-level.html the sea is rising
Causes:
water gets warmer and takes more space
ice is melting
rising faster because of:
wind patterns
ocean currents
land is rising or sinking
Land is rising because:
plate tectonics
mountain ranges
volcanoes
Land is sinking because:
pumping oil, natural gas, and water Causes?:
greenhouse gases
fossil fuels
degrading in the ozone layer http://environment.nationalgeographic.com/environment/global-warming/ Effects:
rising temperature
ice is melting (Antarctica, Greenland, and poles)
sea level rise goes faster
animals, bugs, and plants are migrating north for cooler climates
rain and snowfall has increased http://www.pmel.noaa.gov/co2/story/What+is+Ocean+Acidification%3F sunlight is not reaching Earth Effects:
rainfall
droughts in sub-Saharan Africa
monsoons http://www.bbc.co.uk/sn/tvradio/programmes/horizon/dimming_prog_summary.shtml temperature rises by 10 degrees Celsius
by 2100 UK might have the same climate as present day Northern Africa In the Future... What will happen next? by the end of century sea level will be 7-23 inches higher
if poles melt more it could add 4-8 more inches
hurricanes and storms will get stronger
symbiotic relationships might get out of balance
plants might bloom earlier than the pollinating insects become active
floods and droughts become more common
droughts in Ethiopia could become 10% more frequent
Less fresh water
Quelccaya ice cap in Peru will completely melt around 2100
ecosystems will change
species will move farther north
extinct
ice What can I do? In the Future... by 2099 sea level could be 7-23 inches higher
could rise more if ice sheets melt faster Causes:
ocean water absorbs too much carbon dioxide (CO2)
water contains minerals
calcium is very important to marine organisms
Effects:
if this continues some the there will be too much CO2
there aren't enough minerals
in the industrial revolution, the pH of the surface water dropped by 0.1 pH units (30% more acid) no one is sure what the cause is
stop greenhouse gases
stop fossil fuels
stop degrading the ozone layer Years later... the ocean water will become more acidic
not enough minerals
organisms will die
2100 the acidity will be about 150% more acidic
put the calcifying species (oysters, clams, etc.) in danger
throws off the food chain Heat is being trapped in the atmosphere How can we help? try to not release as much carbon dioxide
try to plant more
not use as much electricity
don't burn as many wood products Next... poles, glaciers, and ice will melt adding to the oceans
climates will get hotter
global warming What can I do? Carbon Dioxide:
plant more trees, crops, and plants
not use as much electricity
don't burn wood porducts
Methane:
use less oil products
use less plastic
Nitrous Oxide:
not burn fossil fuels
carpool How can I help? global warming
greenhouse gases we burn fossil fuels for energy
coal
petroleum/ oil
natural gas Effect:
acid rain
carbon dioxide (greenhouse gas) http://www.darvill.clara.net/altenerg/fossil.htm http://www.energyquest.ca.gov/story/chapter08.html What if we don't stop? non-renewable resource
plastic
heat
electricity
global warming conserve our resources
conserve electricity
not use plastic products How can we stop this? What can we do? stop polluting
greenhouse gases
other by products Thanks for watching! Any questions?
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