The average density of Earth is 5,515 kg/m3. Because the average density of surface material is only around 3,000 kg/m3, we must conclude that denser materials exist within Earth's core.
Republic of Texas Biker Rally. Motorcycles parked under the Texas Capitol building in 2006. The Republic of Texas Biker Rally (R. O. T Biker Rally) is the largest motorcycle rally in Texas and the largest turnstile (ticketed admission) motorcycle rally in the United States. Similar events in Sturgis, South Dakota, and Daytona Beach, Florida, draw more attendees, but they are not ticketed events.
Rally Attendance. Average Rally attendance is in the hundreds of thousands, with the largest estimated attendance of more than 600,000 cruising in for the 60th Anniversary in 2000. Attend the Rally once and it becomes clear why it's a mandatory destination for so many bikers. The sound of growling engines, the smell of exhaust, and the glint of sunlight off chrome are just a few of the elements that make the Sturgis Motorcycle Rally a unique experience.