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three layers of earth - Coggle Diagram
three layers of earth
igneous, sedimentary and metamorphic rocks
igneous rocks are hardest of all
it does not let water to seep through\
primary rocks
lava and magma cools down it solidifies or becomes hard then igneous rocks are formed
basalt
gabbro
sedimentary rocks
pre existing rocks.
many years to form a rock
soft
limestone, coal and gypcum
metamorphic rocks
heat and pressure on igneous and sedimentary rocks
crust
mentle
lower core
inner core
outer core
we live on crust
minerals