I got this from a website.
What is the difference between Trap and Skeet?
While the clay targets move away from the shooter in trap events, these targets cross from left to right and right to left in skeet shooting.
The distance of the target in trap thus increases if the shooter waits longer whereas the distance remains the same in skeet.
The angle, speed and height of the targets remain same in skeet whereas, in trap, the shooter does not know from which direction the target will move out.
The targets are crossing in skeet while they are outgoing in trap.
Read more: http://www.differencebetween.com/difference-between-trap-and-vs-skeet/#ixzz2Jc5g0ZIh
Pardons for not responding sooner...