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Focus of the Week: Rocks and Minerals

Standards:

S3E1. Obtain, evaluate, and communicate information about the physical attributes of rocks and soils. a. Ask questions and analyze data to classify rocks by their physical attributes (color, texture, luster, and hardness) using simple tests.

 

 

Vocabulary

mineral - a nonliving solid found in nature (Earth's outermost layer)

Properties of Minerals

luster - how shiny a mineral is

color - an easy way to describe a mineral; colors of minerals can change

streak - the color of a mineral when it is ground to a powder

hardness - a measure of how easy it is to scratch (test for hardness using fingernails, pennies, or nails)

texture - the way a mineral feels. It can be rough, smooth or bumpy.

 

Mohs Hardness Scale - lists the hardness of ten common minerals; they are listed from softest to hardest (diamond is the hardest / talc is the softest)

 

 

               

 

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