This long skinny thing is called a beam. Beams are only for girls to compete on. The beam is only four inched wide. There are many tricks that are performed on the beam. The eases trick on the beam is a full turn. The hardest trick is a back-hands-spring back layout. To be able to do good on beam you will need to have good balance. 
These wood poles are called the uneven bars. The reason why they are called them that is because that they are uneven. This event is also an girls only. IN the United States grips are needed. Grips are used to help gymnast from letting go of the bar and getting hart. On bars the eases trick is called a kip. The hardest trick is a releases move. A releases move is when a gymnast lets go of the high bar an d falls back and grips the low bar.
This event is called floor. The floor is for girls and guys. They both do a routine. The girls use music and the guys do not use music. The floor has many layers under it . On the top is a soft carpet with a white tape line. The layer under that is a is about five inches of think of foam. Then under that is lots of springs. Then there is more foam then more springs. The last layer is a piece of wood. 
This event is called a vault. The vault is a little table that is covered in pads. On top of the pads is like a ruddier carpet, to help the gymnast from falling and slipping. The easiest  trick to do is a squat on.  The hardest trick is a back-hand-spring triple twist. These vaults are new. The vault use to be a small skinny on. 
This event is called parallel bars. It is a guys only event. It is like the uneven  bars but now the bars are closer and parallel with each other. The bars can be moved up higher and lower went ever gymnast need to. The guys also wear grips. The bar is about 3 to 4 feet apart. The hardest trick they can do on the event are the dismounts. 
This event is called the rings. The rings are only guys event because gymnast need lots of upper shrank. One of the hardest trick on this event is a giants full turn layout. A gaint is a handstand on the bar and then the gymnast glides around the bar staying in handstand.
This picture is a event only for guys. The horse is a medal table with pad over it. The pads are a rubber carpet so that gymnast don't slip. The guys hold on the handles  and does lots of tricks on them. One hard trick is when the gymnast is rotating there hands and circling around the bar. 
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