(This page compares the widescreen tape to a full-screen tape, both from MCA/Universal Home Video.)
All scenes in Jurassic Park that didn't involve CGI were shot in the Super-35 format, meaning that they could be framed differently for widescreen and full-screen. For more on this, see Titanic.
Basically, compared to widescreen version, the full-screen version gains a bit at the top and the bottom of the screen. Meanwhile, the widescreen version has a little more information at the sides of the screen.
The theatrical version of Jurassic Park was framed at the rather mild ratio of 1.85:1. This was probably because the producers knew the film was going to have the potential to make a lot of money on cable and network TV, and they wanted to make sure it looked OK on the small screen.
During some of the more dynamic CGI sequences it pays to have the widescreen version.
As we mentioned on the index page, the full-screen versions of films may contain more detail because the image is larger on the screen. These two screen caps give you some idea of how that works. These are how the images would appear if you were to play both versions of Jurassic Park on the same sized TV.