Minerals and Rocks What do we know?
luster How a mineral shines The reflection How glossy it is How shiny it is What is it?
cleavage How a mineral splits How it breaks apart Cubes or flat planes What is it?
hardness Easily scratched Mohs Scale How tough it is What is it?
streak Powder of a mineral Color of its powder What is it?
igneous rocks Melted or molten Deep within Earth Cool then harden Volcano Rocks What is it?
metamorphic rocks Existing rocks that change Heat, pressure, chemicals Transformer rocks Were once igneous Were once sedimentary What is it?
sedimentary rocks Sand particles of rock Bits of soil Bits of rocks Once living things Cemented together What is it?