Rhythm-

 Rhythm is when there is a repeating element or when something appears to be in motion. Rhythm can be very appealing if used with an element. Example, if you just continuously drew straight lines on a piece of paper in rows, it would probably be dull, also it would not even look as though it would be in motion. The image above is a very good example of rhythm. It portrays smooth looking desert hills due to the continuous smooth lines that are drawn. If you look closely, you may even see that it may look like it is being moved by the wind.