Rocks and Minerlals

the color of the powder that a mineral leaves when it is scratched across a special plate

• luster

• rock

• mineral

• streak

the way the surface of a mineral reflects light

• luster

• mineral

• streak

• hardness

natural, nonliving solid crystals that make up rocks

• lava

• luster

• rock

• mineral

the stage or condition of something being hard

• hardness

• streak

• luster

• rock

smooth flat surfaces, where a mineral breaks

• mineral

• cleavage

• erosion

• weathering

joining of different parts

• erosion

• weathering

• combination

• mineral

material that becomes melted by the heat

• mineral

• molten

• quartz

• streak

become active and eject lava, ash, and gases

• erupting

• classify

• mineral

• sediment

parts of material the settles at the bottom of a liquid

• lava

• magma

• erupting

• sediments

arrange into groups or categories

• sediment

• molten

• mineral

• classify