Universal's Island of Adventures and Universal Studios are two themed parks, located in Orlando-FL. They belong to as part of Universal Orlando Resort Complex.
The main differences between Islands of Adventure and Universal Studios are the themes. Universal Studios centers around TV shows and movies, and various rides reflect that. On the other hand, Islands of Adventure features adventure and thrill rides, as the park is themed around superheroes and magical creatures.
This video shows a small sample of the attractions you can find there.

Source of information: Wikipedia

Music: "Lost Song" - Roald Velden (free download and no copyright music)