Now the previous experiment proved that carbon dioxide is a greenhous gas.
Oz wave guy , that does not mean it is posion, it is a necessary trace gas that we need. Any secondary student knows this who pays attention in science class, so can you frop this point as it is patronising. See if you can read this all the way through (like it the other way?)
This experiment shows the effect at trace levels.
Experiment #2: Carbon dioxide chamber.
Maybe you've heard someone like John Coleman -- former weatherman on 'Good Morning, America!' and the founder of The Weather Channel -- telling people that global warming is a scam because carbon dioxide is only a trace gas, and therefore can't have a large impact on our planetary weather. Here's a simple at-home experiment which proves him DEAD WRONG.
You'll need:
1.) An empty 2-liter soda bottle, label removed. 2.) A thermometer. Maybe two. 3.) A piece of narrow cardboard, long enough to cover the thermometer. 4.) A heat-lamp. 5.) An ordinary balloon. 6.) Some thread & tape. 7.) Some dry ice. 8.) A small syringe (without a needle) or eye-dropper.
Take the cardboard and tape it to the thermometer. This will shield it from the heat lamp so that the light from it doesn't give an artificially high temperature. (We want the temperature of the air, not the temperature of the glass.) Attach the string to the cardboard and thermometer and suspend it inside the empty 2-liter soda bottle, using some tape on the inside. Next, cover the opening at the top with your balloon, keeping it as deflated as possible. This will regulate the air pressure inside with the air pressure outside, again so as to not give an artificially high temperature.
Turn on the heat lamp and let it heat up the inside of the bottle. Make sure the cardboard-side of the thermometer is facing the lamp. You will see the balloon inflate as the air inside heats up and expands. Let the temperature stabilize (I recommend half an hour). Record the temperature inside. (At this point, you may use the option of a second thermometer, kept outside the bottle nearby, to make sure the temperature of the room doesn't change significantly to alter your result.) Usually, I find that the temperature reads somewhere around 90 degreees when I reach this stage. It's all right if your own measurements at home are slightly different.
Now, turn off the lamp and let the bottle cool. We will now add a small amount of carbon dioxide gas to increase the percentage of CO2 inside the bottle. Now, it should be noted here that Mr. Coleman is right about CO2 being a trace gas. It's only about 0.038% of our atmosphere. We're going to increase it by only a little bit, by adding 0.005% to total 0.043% inside our soda bottle. You can confirm the math at home, but you can increase that amount of CO2 by adding exactly 0.1cc's, or 0.1ml of carbon dioxide. How do you do that?
Here's where you use your dry ice. Fill a sink with water. Then, put a small glass under the water and let it fill all the way. Keeping the glass completely under water, put the dry ice into the sink. Now, catch the bubbles inside the glass! Dry ice is pure CO2! So the gas inside the glass is the pure carbon dioxide you need. Take your syringe and suck in a little bit of CO2. Now, it's easy to get a syringe, but if you can't, just use a small eye-dropper. Just remember to completely fill up the eye-dropper with water first, and suck in one tiny bubble at the very tip. (That bubble should be roughly 0.1cc.) Now, squirt the CO2 into the bottle by rolling up one corner of the balloon. With the syringe, point down. With the eye-dropper, point up! (And spill no water, if you can help it.) Because pure CO2 is a little heavier than air, it will travel down into the bottle. Now the percentage of CO2 is just a tiny bit higher.
Make sure the balloon is secure over the top of the bottle again, and turn on the heat lamp. Make sure the distance between the heat lamp and the bottle is still the same. Now, let the temperature stabilize again, and record the temperature.
You will observe that the temperature will jump by roughly 5 to 6 degrees farenheit, or almost 3 degrees celcius!
If you don't think that's much, just think about the difference between a 45 degree day and a 50 degree day. Or a 55 degree day and a 60 degree day. It's a lot!
Oh, and by the way, the new concentration of CO2 we made, at 0.043%? We're projected to reach that level of CO2 sometime after the year 2020.
http://sacredcowwursthaus.blogspot....rself-global-warming.html?zx=fbced142f55ad5c9