This is a worksheet designed for a high school geology class. It reviews igneous, sedimentary, and metamorphic rocks, including some examples of each and formation processes. The worksheet is a good enrichment activity for students to work on if they finish their work early, or can be used as a review worksheet after studying the rock cycle. There are 24 clues about rocks and students unscramble a word to find the answer. At the end there is a wordsearch which, once all the terms are circled, reveals a hidden phrase about geology. A full answer key is included.