Clue 1 - Igneous rocks - Station 3     Recognizing an igneous rock
Wednesday, May 09, 2012
8:38 AM
Mystery Detectives - Alien landing - Clue #1
Station 3 - Atom, crystal, mineral, rock
Your overall goal:
To identify a mysterious igneous rock and determine the tectonic setting in which it formed so that you can reduce the possible
places on Earth where you landed.
Name: 
Partner(s):
Date:
Tasks:
Observe each set of rocks and objects and analyze special
features described below.
Follow the directions give below to explore how atoms, crystals,
minerals and rocks are related.
DEFINITION
Igneous rocks are formed when molten rock solidifies
as it cools.

Igneous rocks can solidify while underground, after it is erupted at the surface, or partly in each place.
Which rocks are igneous in origin? 
Observe each rock and decide whether it is igneous in origin. Base your decision on what you already know about igneous rocks. 
You'll look at these later and see how much you've learned! 
For your science notebook:
2a.   Make a list and write down why each of these rocks is, or is not, igneous in origin. 
Rocks at this station:
a Clue!
How igneous rocks form
Igneous rocks form and turn into a solid as molten rock cools.
Igneous rocks can solidify:
1) while underground,
2) after erupting to the surface, or
3) partially at each place, while below and above ground. 
Erupted materials include:
1) Lava - molten rock
2) Rocks that were already solid
3) Ash - powedery fine pieces of rockh
3) Gases - carbon dioxide and water 
- the Earthlings 
Note to Aliens
"Don't think you know enough to say? And you dont' want to pretend to know.
This is for practice It's ok to guess. We would do it.
A little secret - everyone on Earth starts out that way, without a clue. Even the experts!
Your personal rock will speak to you soon. 
- the Earthlings 
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