rocks & minerals-3 rd grade photos courtesy of google images
Post on 16-Dec-2015
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Water disappears into the air.
When water evaporates from a solution of salt andwater, only salt crystals will be left behind.
Rocks have properties. Properties are characteristics thatcan be observed and described.
To look at
To tell about
Rocks have the following properties:
Color: describe the color
Texture: how it feels
Size: how big or small it is
Luster: shiny or dull?
Hardness: Need to complete the scratch test todetermine if it is hard or soft.
Color:
Texture:
Size:
Luster:
Hardness:
Light brown
shiny
(since I can’t feel it, I’m guessing smooth with sharp edges.
Small like a ping-pong ball
I can’t scratch it, but I’m guessinghard.
What properties might a geologist use to describe this rock?
What properties might a geologist use to describe
these rocks? Color:
Texture:
Size:
Luster:
Hardness:
Charcoal gray
dull
(since I can’t feel it, I’m guessing smooth with sharp edges.
Large boulders
I can’t scratch it, but I’m guessinghard.
When measuring rocks, geologists use these terms:
Circumeference: distance around an object
Diameter: distance across circular object
Depth: how thick an object is
When measuring rocks, geologists use these terms:
Circumeference: distance around an object
Diameter: distance across circular object
Depth: how thick an object is
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