1-3 glossary Flashcards
crust
the thin outermost layer of earth
rock
a non living crystalline material
element
a pure substance or a compound
crystals
a mineral from the earths crust
lusture
the shine of a crystal/mineral
streak
the colour of a powder that comes of crystals
cleavage
the seperating layers of crystals
fracture
a rough sharp edge of a mineral
mineral
a more natural crystaline material
igneous
a rock thats been solidifed from lava or magma
magma
melted rock formed under earths crust
intrusive rock
a type of rock formed when lava cools
exstrusive rock
a type of igneous formed when magma cools above the earths crust
sedimetery rock
a rock formed by loose materials
sediment
loose materials such as rock bits and organic remains
compaction
cementation
when particals are help together by other material
metamorphic rock
a type of rock made by high heat and pressure that changes its form
parent rock
the orginal rock before it goes through the rock cycle
compost
something made out of plant matter
humus
a dark coloured portion of soil in compost
fertile
a type of soild that helps plant growth
soil profile
the layers of soil and how there divided
top soil
a dark rich soil that contains humus and rock
leaching
is the removal of soil materials dissolved in water
mechanical weathering
physical break up
frost wdging
when water gets into cracks and breaks things
chemical weathering
breaks down materials with chemicals
biological weathering
the breakdown of rocks caused by plants animals bacteria and fungi
straitons
the scratches on rocks
meandering
when the river is going super slow and it still digs
erosin
the movements of rock from one place to another
abrasion
exstreme exsamples of wind erosin
moraines
when glaciours begin to melt and retreat
weathering
rocks can be weatherd mechachincaly, chemicaly,biologicaly
