Radience

Rocks and Minerals

Science

Watch Lesson: Rocks and Minerals

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a mineral’s resistance to scratching
Watch hardness Simple Definition
a rock formed when melted rock cools and hardens
Watch igneous rock Simple Definition
the way a mineral's surface reflects light
Watch luster Simple Definition
the rock that forms when existing rock is changed by heat, pressure, or chemicals
Watch metamorphic rock Simple Definition
a natural inorganic solid with definite chemical composition and structure
Watch mineral Simple Definition
a natural solid made of a mixture of minerals
Watch rock Simple Definition
a process that changes rocks from one form to another
Watch rock cycle Simple Definition
a rock that forms when sediment is pressed and cemented together
Watch sedimentary rock Simple Definition
a color of a mineral in its powdered form
Watch streak Simple Definition

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