ocr: Which things create the most friction? @6 - UNEVEN SURFACE - : - - : l : : - - SMOOTH SURFACE All substances, even liquids and gases, create friction. Objects with rough surfaces create more triction than objects with smooth surfaces. A bowling ball, for example, creates more friction when it rolls over a rough carpet than when it rolls along a - bowling alley. The bowling alleyis mirror-smooth to help the ball roll as far and straight as possible. Balls lubricated by oil in the Mammoth Dip will flow faster than balls covered in sticky glue. This - is because oil flows much more easily, creati ...
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