The Olympic Marks are two of the most iconic symbols of the Olympic Games. The first is the Olympic Rings, which are composed of five interlocking rings in the colors of blue, yellow, black, green, and red. The second is the Olympic Flame, which is lit at the opening ceremony of each Olympic Games and is extinguished at the closing ceremony. The term 'METERS' refers to the metric system of measurement, which is used to measure distances in track and field events. The term 'etas' refers to the Greek letter η, which is the symbol for the eighth letter of the Greek alphabet and is used to represent the number eight in the Olympic Games.