|Gather rocks, nails, and screws etc to scratch the rock with. Using the descriptions below they will try and figure out what type of rock it is. |
Igneous:smaller holes in the rocks (vesicules), grains through the rocks, heavier, often darker colors, (Rocks similar to: stone and sandstone)
Sedimentary: has fossils sometimes, lighter in weight than igneous, lighter colors, grains are together/interlocking, presence of fossils (Rocks similar to: limestone, sandstone,shale, chalk)
Metamorphic: larger grains, a layering look, presence of crystals, layers or bands (foliated) or random grains (non-foliated) (Rocks similar to: gneiss and slate.
Using a rock journal, use the description above to help you
identify what type of rocks you have.