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i would like it to be on global warming and/or pollution.
um like meadium dificulty.. nothing like too hard...
um... i have to be able to do an expierament.
can you help?

2007-11-01 10:39:44 · 3 answers · asked by Anonymous in Environment Global Warming

3 answers

Well, you just could make something up --- You could just get an Emmy or a Nobel Prize.

Or you could do some research on just how little there is of nuclear waste (hint LT 200,000 tonnes) world wide compared to coal ash waste --- include the carbon from the coal then ask which still can be recycled for more energy?

2007-11-01 10:47:09 · answer #1 · answered by KarenL 6 · 0 0

Of all the gases that humans produce, carbon dioxide is the one that contributes most to the manmade component of global warming. Here's an experiment you can do that demonstrates how much heat carbon dioxide can retain.

OVERVIEW
Carbon Dioxide is identified as Greenhouse Gas because of its ability to trap heat within Earth’s atmosphere. This investigation is designed to compare the ability of a sample of carbon dioxide gas to absorb thermal energy compared to a sample of air. The experiment presents a visual representation of the greenhouse effect and illustrates the heat-absorption of atmospheric carbon dioxide.

PRE-REQUISITE
The students to whom the demonstration is to be shown should have an understanding of the the Greenhouse Effect and it's role in affecting our climate.

EQUIPMENT
Two 250 ml flasks
1 #6 no hole stopper or equivalent
2 #6 one hole stoppers or equivalent
Alka Seltzer or similar
1 large pan or bucket of water
1 short glass tube connected to 30 cm of flexible tubing,such as airline tubing
2 lab thermometers (ordinary ones will do)
2 lamps with 100 watt light bulbs

PROCEDURE

● Fill a 250 ml flask with water to the rim, then stopper the flask with a #6 no-hole stopper.

● Place the flask, upside down, into a pan or bucket of water and then remove the stopper. The flask should remain filled with water as it sits upside down in the pan.

● Add 100 ml of water to a second flask.

● Insert a short glass tube into a #6 one-hole rubber stopper. Then attach a piece of airline tubing to the glass tube. The airline tubing should be about 30 cm in length.

● Feed the free end of the airline tubing under the water in the pan and into the inverted flask.

● Drop one Alka-Seltzer tablet into the flask containing 100 ml of water and then quickly stopper the flask with the tube assembly. The carbon dioxide from the dissolving Alka-Seltzer will begin to displace the water in the inverted flask in the pan.

● After the water has been evacuated from the flask in the pan, place the #6 no-hole stopper in the flask and remove the flask from the pan of water.

● Insert a laboratory thermometer into each of two #6 one hole stoppers. It helps to dip the thermometers in glycerin before attempting this procedure.

● Insert one of the thermometer stoppers into an empty flask. This will the sample of air.

● Remove the stopper from the flask of carbon dioxide gas and quickly replace it with a thermometer stopper. (Note: carbon dioxide gas is more dense than air and should remain in the flask after it is opened.)

● Place each flask 5 cm from a 100 watt light bulb.

● Record the beginning temperature in each flask of gas.

● Turn on the light and record the temperature in each flask at the same time and take further readings at precisely one minute intervals for 30 minutes or until temperatures begin to level off.

● Plot a line graph of the collected data, using separate colored pens for each flask.

2007-11-01 11:16:55 · answer #2 · answered by Trevor 7 · 2 1

i dunno if i can really give too much advice on this...i hate projects...but, u cood always do a project that shows charts, showing like...how land and stuff is changing and getting destroyed cuz of pollution and stuff...of charts showing like the temperature raising or sumthin...i dunno if u cood really count it as an experiment, but...

2007-11-01 10:45:15 · answer #3 · answered by Anonymous · 0 2

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