Now take the skateboard outside and go for a ride. When you are finished touch the wheels to observe their temperature. The wheels and ball bearings in the wheels are used to reduce friction between the road and the skateboard. However, the wheels should still be warm due to friction. This is an example of rolling friction .
Fluid friction occurs when an object moves across or through a fluid.
All gases and liquids are fluids. Therefore, an airplane and a swimmer both experience fluid friction . List five other examples of friction. Visit the Utah State 8th Grade Integrated Science Core Curriculum Page . USOE Home Page Copyright by the Utah State Office of Education.