Why does the dust always billow up behind a car on a dirt road?

Subject: Why does the dust always billow up behind a car on a dirt road?

Date: Mon Jan 10 13:29:03 2000
Posted by JOHN RODSTROM
Grade level: 10-12 School: MOUNT VERNON HIGH SCHOOL
City: MOUNT VERNON State/Province: OHIO Country: USA
Area of science: Physics
ID: 947532543.Ph

Message:


Why does the dust always billow up behind a car on a dirt road?  Someone 
told me that it was because of a so called "vortex".  Is this true and 
what is a vortex anyway?  How do they occur/work?

Re: Why does the dust always billow up behind a car on a dirt road?

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