This printable word search puzzle on the topic of Rocks & Minerals contains 12 hidden words in a 17x17 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
Specific gravity
Phosphorescence
Radioactivity
Fluorescence
Luminescence
Flame test
Acid test
Hardness
Fracture
Cleavage
Luster
Streak