Formation
These rocks are formed when lava cools and hardens
Igneous rocks
These rocks may appear glassy
Igneous rocks
A solid rock turning into a liquid (magma)
The shine of a mineral
Luster
A naturally occurring solid
Mineral
Sedimentary rock
These rocks often have visible pebbles or stones in them
Sediments being packed together
The powdered form of a mineral
Streak
Process by which new rocks are made from old rocks
Rock Cycle
These rocks are formed by heat pressure
Metamorphic rock
These rocks may have crystals
Metamorphic rocks
Sediments being glued/stuck together
Cementation
The outside appearance of a mineral
Color
Hot liquid under ground
Magma (or Lava)
Sediments
These rocks may have "ribbon-like" layers
Metamorphic rocks
Process that creates metamorphic rocks
Heat and pressure
A fracture that appears man made (smooth cut)
Cleavage
Tendency of some minerals to break unevenly
Fracture
Melting
These rocks may have fossils in them
Sedimentary rocks
This causes rocks to turn into sediments
Erosion (and weathering)
Mohs scale ranks minerals from 1-10
Hardness
Amount of matter in a given space
Density