the continual changing of one kind of rock into another kind
rock cycle
hot, melted rock beneath Earth's surface
magma
magma that reaches Earth's surface
lava
a rock formed from hot, melted rock that cools and hardens
igneous rock
a rock formed from another rock that has been squeezed and heated (within the Earth)
metamorphic rock
a rock formed from tiny pieces of broken (weathered) rocks pressed together
sedimentary rock
tiny broken bits of rocks, plants, bones, and shells
sediment
the remains of a once living thing from long ago
fossil
a rock that contains a useful mineral
ore
one of the parts that a rock is made of
mineral
the way something shines in the light
luster
the color of the powder made when a mineral is scratched on white tile
streak
the ability of a mineral to scratch another mineral
hardness