Download IGNEOUS

IGNEOUS
*Form from magma cooling inside earth or lava cooling outside the
earth.
*Extrusive- formed outside from lava. Small or no crystals present.
*Intrusive- formed inside from magma. Larger crystals.
*The longer the cooling time the larger the crystals will form.
*Hard, dense and durable being used for building.
*Comes from latin word “ignis” which means fire.
*Make up majority 65% of Earth’s crust.
*Common rocks: granite, basalt, obsidian, pumice
SEDIMENTARY
*Form when rocks weather, erode, deposit, compact and cement
together.
*Have thicker layers that are loosely compacted.
*Often dull in luster and can break easily.
*Can have fossils in them.
*Clastic- made of rock fragments / sediment.
*Organic- made of remains of plants and animals
*Chemical- made from dissolved minerals that form a solution which
crystallizes as the water evaporates.
*Make up a very small 8% of Earth’s crust.
*Common rocks: sandstone, shale, conglomerate, limestone, calcite,
coal
METAMORPHIC
*Form when rocks are exposed to intense heat and pressure.
*Have thinner layers that can be foliated (wrinkled).
*Often shiny, very hard and dense.
*Make up 27% of Earth’s crust.
*Comes from Greek words “meta” meaning change and “morpho”
meaning form.
*Common rocks: marble, slate, quartzite, schist and gneiss (pronounced
nice).
IGNEOUS
*Form from magma cooling inside
earth or lava cooling outside the earth.
*Extrusive- formed outside from lava.
Small or no crystals present.
*Intrusive- formed inside from
magma. Larger crystals.
*The longer the cooling time the
larger the crystals will form.
*Hard, dense and durable being used
for building.
*Comes from latin word “ignis”
which means fire.
*Make up majority 65% of Earth’s
crust.
*Common rocks: granite, basalt,
obsidian, pumice
SEDIMENTARY
*Form when rocks weather, erode,
deposit, compact and cement together.
*Have thicker layers that are loosely
compacted.
*Often dull in luster and can break
easily.
*Can have fossils in them.
*Clastic- made of rock fragments /
sediment.
*Organic- made of remains of plants
and animals
*Chemical- made from dissolved
minerals that form a solution which
crystallizes as the water evaporates.
*Make up a very small 8% of Earth’s
crust.
*Common rocks: sandstone, shale,
conglomerate, limestone, calcite, coal
METAMORPHIC
*Form when rocks are exposed to
intense heat and pressure.
*Have thinner layers that can be
foliated (wrinkled).
*Often shiny, very hard and dense.
*Make up 27% of Earth’s crust.
*Comes from Greek words “meta”
meaning change and “morpho”
meaning form.
*Common rocks: marble, slate,
quartzite, schist and gneiss
(pronounced nice).