Game Smartz

Rocks and Minerals

Science

Rocks and Minerals Chapter Video

Rocks and Minerals Chapter Video

hardness

a mineral’s resistance to scratching
hardness Simple Definition

igneous rock

a rock formed when melted rock cools and hardens
igneous rock Simple Definition

luster

the way a mineral's surface reflects light
luster Simple Definition

metamorphic rock

the rock that forms when existing rock is changed by heat, pressure, or chemicals
metamorphic rock Simple Definition

mineral

a natural inorganic solid with definite chemical composition and structure
mineral Simple Definition

rock

a natural solid made of a mixture of minerals
rock Simple Definition

rock cycle

a process that changes rocks from one form to another
rock cycle Simple Definition

sedimentary rock

a rock that forms when sediment is pressed and cemented together
sedimentary rock Simple Definition

streak

a color of a mineral in its powdered form
streak Simple Definition

Related Chapters