geology Flashcards
igneous
Igneous is rocks that come from lava or magma
magma
Magma is hot liquid that is under the ground
lava
Lava is liquid that has come out of the ground
extrusive
Extrusive is when rocks have exited the volcano
intrusive
Intrusive means when rock is formed inside the volcano
lithosphere
Lithosphere is the layer in which we stand on
Asthenosphere
Asthenosphere is the second layer of the earth
crystals
Crystals is made underground in the volacno
limestone
limestone are sedimentary rock that is formed from deposits of remains of sea organisms
coal
coal is a sedimentary rock formed from dead plants and animals that were buried before rotting completely
sandstone
A sedimentary rock with medium-sized grains
stone age
stone age is the first period of prehistoric human culture used by stones
alloy
alloy is a metal by combining two or more metallic elements
flint
flint is a hard grey rock consisting a nearly pure silica
percussion flaking
the shaping of a stone implement by striking or chipping off flakes with another stone
siltstone
a sedimentary rock with a particle size between that of sandstone and mudstone
mudstone
a fine-graded sedimentary rock that doesn’t have layering
shale
a fine-graded sedimentary rock formed in layers by the consolidation of clay
glaciers
bodies of ice called glaciers
moraines
deposit left by movement of a glacier
floodplains
flat, open land beside a river where sediments are deposited during floods
erosion
the wearing away and the removal of soil and rock by natural elements
sedimentary rock
rocks that are formed from the particles of sediments
rock salt
a sedimentary deposit formed when a salt lake or seabed dried up