Clue 1 - Igneous rocks - Station 1     What is a rock?
Wednesday, May 09, 2012
8:38 AM
Station 1:  What is a rock
Would you recognize a rock if you saw one?
To learn more and share 
Defintion of a rock
A rock is a collection of minerals or smaller rocks that are naturally attached to each other and form a solid.
Note - A rock may be composed of glass rather than mineral matter.
Skill:  How to distinguish rocks from other objects.
"Distinguish" means to tell them apart. 
Look at each specimen and decide whether it is a rock or not.  
If an object is NOT a rock, explain why not.
Object
Rock or not?
(circle your answer)
Why not?
An orange
Rock           Not a rock
Sea glass
Rock           Not a rock
Diorite
Rock           Not a rock
Conglomerate
Rock           Not a rock
Plastic ball with speckles inside
Rock           Not a rock
Concrete
Rock           Not a rock
Sand
Rock           Not a rock
Obsidian
Rock           Not a rock