The USA will face Germany in the title game on July 22 at Viking Stadium in Stavanger.
Noelle Keselica scored the fourth goal for the USA, which needed to win by four or more goals to edge Iceland for the Group B title.
''We were just all over them. We never took our foot off the gas,'' said U.S. head coach Jillian Ellis. ''Danesha was just incredible. She was absolutely relentless, chasing balls down, working hard all over the field, making things happen and causing havoc.''
July 20 in Sandnes
USA 4 Norway 0. Goals: Adams 5, 68, pen. 78, Keselica 71.
USA û Henderson, Wilmoth, Buehler, Fletcher, Taylor, Huffman (Gray, 46), Keselica, Woznuk, Adams, Davis (Cinalli, 59), Trotter.
Norway -- Stavshoit, Berge, Stange (Donnestad, 80), A.Giske, Mykjaland (Pedersen, 84), Abdullah (Lindblom, 74), Vikestad (Akerhaugen, 46), Thorsnes (Andersen, 36), Wiik, M.Giske, Knutsen.
Referee: Saija Raatikainen (Finland).