1970 MexicoThe Telstar adidas
launches first official World Cup ball. It was leather, with 32 black and white panels.
1978 ArgentinaThe Tango
Had 20 panels with 'triads' to create impression of circles
1982 SpainTango Espana
Seams had rubber inlay to stop water seeping through.
1986 MexicoThe Azteca
First polyurethane-coated World Cup ball.
1990 ItalyThe Etrvsco
Had an internal layer of polyurethane foam
1994 United StatesThe Questra
Softer and made from five different materials.
1998 FranceThe Tricolore
Red,white and blue, first multi-coloured match ball.
2002 JapanThe Fevernova
Thicker inner layers to improve consistency.
2006 GermanyThe Teamgeist
New panel formation to make it rounder.
2010 South AfricaTheJabulani
Made of natural latex and woven fabric, with eight foam rubber panels
source :dailymail