Rocks and Rock Cy

naturally occurring substances that are neither plants nor animals.  Each has its own chemical composition

• Rocks
• minerals
• hardness
• color

made up of a combination of minerals

• minerals
• rocks
• hardness
• color

measured using Moh's Scale, which orders ten minerals from softest to hardest

• minerals
• rocks 
• hardness
• color

the color of a rock

• minerals
• hardness
  hardness
• color
• streak

the color that results when a rock is rubbed against a tile

• hardness
• color 
• streak
• texture

the size of the grains or crystals in the rock

• color
• streak
• texture
• luster

how the rock reflects light, which can be metallic glassy or dull

• luster
• texture
• streak
• chemical

how a rock breaks when hit  by a hammer or another object (crushes, in layers, etc.)

• luster
• cleavage
• texture
• streak

never-ending process by which rocks are changed from one type of rock into another

• cleavage
• minerals
• rocks
• rock cycle

3 types of rocks

• hard, soft, chewy
• igneous, metamorphic,  mint
• sedimentary, igneous, mork from ork
• sedimentary, igneous, metamorphic