Science Project Summary:

Levels of carbon monoxide emission by aging cars

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Difficulty: Advanced 7
Cost ($): 50
Time required: < 3 days
4 hours to prepare, 1 day to conduct this science fair project
Availability of materials:
You will need to obtain 4 cars of the same make and model, but of varying ages
Required Skills:
You will need to know how to use a carbon monoxide deterctor
Safety concerns:

Carbon monoxide gas is extremely poisonous. Use a gas safety mask and ensure the presence of adult supervision when performing measurements.

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This science fair project was performed to compare the amounts of carbon monoxide gas released by cars of different ages. The tests were done by comparing the emission levels of a new car, a 5-year-old car, a 10-year-old car and a 20-year-old car.
Procedure preview:
1.    For this experiment, the independent variable is the age and the location of the car. The dependent variable is the amount of carbon monoxide released by the car, which will be determined with the carbon monoxide detector. The constants (control variables) are the make and model of the car, the time the car engine is allowed to run and the size of the garage. 2.    Park the new car inside a closed garage. Wear the safety mask securely to prevent the inhalation of poisonous gasses. Place the carbon monoxide detector 20cm away from the car exhaust pipe. With help .....