The next tutorial in the earth Sciences series
covering the subject of Rocks and Minerals and including Minerals, The
Hardness Scale, Igneous Rocks, Sedimentary Rocks, Metamorphic Rocks and
Weathering. The same format as earlier disks with questions and multiple
choice answers. Perfect for students and fascinating for others as a way
to improve your general knowledge. If you have followed the entire
series, you might soon be ready for Mastermind!