4-H National Youth Science Day
Georgia 4-H
Is Climate Change Real????
Is Climate Change Real???
Increases in CO2, Methane, and
Nitrous Oxide in the atmosphere
are related to increases in
temperature.
Greenhouse Gas
• Gases in the atmosphere that trap heat and
warm the earth
• CO2-produced by burning fossil fuels and other
waste
• Methane-produced during production of oil, coal,
and natural gas. Also produced by landfills.
• Nitrous Oxide-produced by farming and factory
practices
• Flourinated gases-produced by some factories
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Effects of Climate Change
• Increasing temperatures
• More droughts
• More major events: large storms, long periods
of drought, long periods of rain, more runoff
• More hurricanes and larger hurricanes
• Less water available (mostly due to population
growth)
• More coastal land will be covered by ocean
What About our Water??
•
Increasing temperatures, carbon dioxide emissions,
and run-off are affecting the quality of our water
•
Higher water temperatures affect plants and
animals that live in our waters
Carbon Dioxide is absorbed by the ocean and
forms carbonic acid. Some CO2 is used by
organisms during photosynthesis but some
remains in the water
High levels of CO2 in the water causes it to become
more acidic
Run-off can carry dangerous contaminants that
can pollute our waters and kill the organisms that
live there
•
•
•
What does Carbonic Acid do to our Oceans?
•
Reef-building corals cannot produce their skeletons
as fast
•
Marine algae and zooplankton cannot maintain
their protective shells
•
Young marine animals are less likely to survive to
become adults
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The Experiment: Materials
•Straws
•Plastic cups
•Plastic bags
•0.04% Bromothymol Blue
•Plastic wrap
•Effervescent antacid tablets
•Eyedropper
•Water
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The Experiment: SAFETY
Bromothymol blue is a chemical solution that
detects if something is acid or basic
•
•
Do not get the liquid in your mouth
Do not get the liquid in your eyes
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The Experiment: Part 1
•
•
•
•
•
Add water to cup
Add 1 dropper full of BTB
Insert straw then cover cup with plastic wrap
SLOWLY blow bubbles
Repeat with multiple straws/blowers in one cup
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The Experiment: Part 1
What do you think caused the liquid to turn yellow?
Why did it turn yellow faster when more people were blowing
in the cup?
What would happen if we let the cup sit overnight?
BEFORE
AFTER
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The Experiment: Part 2
•
Fill cup half full of water and pour into baggie
•
Seal except for one small portion and press out
as much air as possible
•
Add ½ tablet, seal, shake 3 seconds, and
observe
•
Using new bag & water, repeat with 1 tablet
•
Using new bag & water, repeat with 2 tablets
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The Experiment: Part 2
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The Experiment: Part 2
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The Experiment: Part 2
•
Fill a new cup ½ full of water
•
Add 2 droppers full of BTB
•
Add ½ tablet to cup
WHAT DO YOU THINK WILL HAPPEN?
WHAT DO YOU THINK WILL HAPPEN IF
WE ADD SODA TO THE CUP?
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The Experiment: Part 2
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What can we do to reduce CO2 in the air?
• Drive less, carpool, walk, ride bike
• Drive hybrid cars that are more energy
efficient
• Use compact fluorescent light bulbs
• Recycle and use recycled products (they
take less carbon to make)
• Plant trees—they convert CO2 into oxygen
• Turn up the air conditioning and turn down
the heat
• Use less water
• Buy local food
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What’s Your Carbon Footprint?
•
What is a Carbon Footprint?
• The amount of greenhouse gases produced
during our daily activities
•
Our carbon footprint is determined by:
• The actual gases we produce each day by driving,
heating/cooling our homes, using electricity, etc.
• Items we use also affect our carbon footprint
For example: carbon was produced in the making of
your clothes and carbon will be produced as they
are breaking down after you throw them away.
The more we buy, the more emissions are
produced!!!!
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Calculating Your Carbon Footprint
1
1000
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14666
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Calculating Your Carbon Footprint
1
1000
33
8000
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Calculating Your Carbon Footprint
0
0
0
0
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Calculating Your Carbon Footprint
700
630
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Calculating Your Carbon Footprint
750
13,500
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Calculating Your Carbon Footprint
60
7920
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Calculating Your Carbon Footprint
0
0
0
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Calculating Your Carbon Footprint
Add up all of the boxes with a total
The Carbon Footprint for
the Green Family is
44,716 lbs/year
What’s your Carbon Footprint??????
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Enter Your Carbon Footprint Online
www.4-h.org/NYSD
2010 NYSD Results Gadget
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Questions?