Test topics: Meet in computer lab.

• minerals (five characteristics)• tests geologists use to identify a mineral• use of a mineral guide to identify a mineral• rocks; how do they differ from minerals• rock types• general formation of each of the three types• processes that construct or destruct rock• sub-groups of each of the three types• rock cycle• identification of rock samples (group and sub-group only; knowing name of rock is extra credit – Do NOT put your focus there!)

Rock Type Review

All Rocks

sedimentaryigneous metamorphic

intrusive extrusive clastic organic non-foliatedfoliatedchemical

remains of plant

or animal

Bits of sediment

compacted (or

cemented ) together

Cooled lava; small or not visible mineral grains; some have no minerals at all and are called glass

Cooled magma in crust; large visible mineral grains

No visible

layers or bands

Heat and

pressure cause

minerals to line

up in visible

layers or bands

minerals precipitated

out of a solution

Rock Cycle

Every rock type can become every other rock type eventually

because the earth’s

constructive and destructive

processes repeat

themselves

continuously.

Heat and pressure