The following videos will be useful in helping you in your role as Rock Detective.
Remember you want to find
3 main groups of rock
- describe their features
- how they are formed (where they come from, role of temperature, pressure etc)
- examples of rock type in the group
- what these rocks might be used for and why (strength, if permeable or not etc)
http://www.youtube.com/watch?v=OJ-Vr_9t5Sg&feature=related
http://www.youtube.com/watch?v=i81eVDgvKas&feature=related
http://www.youtube.com/watch?v=v3yJArifULo