geology Flashcards

1
Q

igneous

A

Igneous is rocks that come from lava or magma

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2
Q

magma

A

Magma is hot liquid that is under the ground

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3
Q

lava

A

Lava is liquid that has come out of the ground

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4
Q

extrusive

A

Extrusive is when rocks have exited the volcano

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5
Q

intrusive

A

Intrusive means when rock is formed inside the volcano

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6
Q

lithosphere

A

Lithosphere is the layer in which we stand on

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7
Q

Asthenosphere

A

Asthenosphere is the second layer of the earth

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8
Q

crystals

A

Crystals is made underground in the volacno

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9
Q

limestone

A

limestone are sedimentary rock that is formed from deposits of remains of sea organisms

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10
Q

coal

A

coal is a sedimentary rock formed from dead plants and animals that were buried before rotting completely

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11
Q

sandstone

A

A sedimentary rock with medium-sized grains

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12
Q

stone age

A

stone age is the first period of prehistoric human culture used by stones

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13
Q

alloy

A

alloy is a metal by combining two or more metallic elements

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14
Q

flint

A

flint is a hard grey rock consisting a nearly pure silica

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15
Q

percussion flaking

A

the shaping of a stone implement by striking or chipping off flakes with another stone

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16
Q

siltstone

A

a sedimentary rock with a particle size between that of sandstone and mudstone

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17
Q

mudstone

A

a fine-graded sedimentary rock that doesn’t have layering

18
Q

shale

A

a fine-graded sedimentary rock formed in layers by the consolidation of clay

19
Q

glaciers

A

bodies of ice called glaciers

20
Q

moraines

A

deposit left by movement of a glacier

21
Q

floodplains

A

flat, open land beside a river where sediments are deposited during floods

22
Q

erosion

A

the wearing away and the removal of soil and rock by natural elements

23
Q

sedimentary rock

A

rocks that are formed from the particles of sediments

24
Q

rock salt

A

a sedimentary deposit formed when a salt lake or seabed dried up

25
conglomerate
sedimentary rock containing large particles of various sizes cemented together
26
metamorphic rocks
rocks formed from another rock that is under heat or pressure
27
metamorphsim
the process that changes rocks by extreme pressure or heat
28
mineral ores
rocks mined to obtain a metal or other chemical within them
29
mining
extraction of natural resources from the earth
30
mineral
u
31
overbuden
waste rock removed from below the topsoil
32
open-cut mining
mining that finds out soil and rocks on the surface of the land
33
underground miing
mining that uses shafts and tunnels to remove rock from deep below the surfce
34
fossils
any remains of an animal, evidence of life in the past
35
folding
the buckling of rocks. It is caused when rocks are under pressure from both sides.
36
paleontologists
a scientist who studies fossils
37
relative age
the age of a rock compared with the age of another | rock
38
trace fossils
fossils that provide evidence, such as footprints
39
extinct
describes volcanoes that are no longer active. Extinct volcanoes have not erupted for thousands of years
40
Carnivores
animals that eat other animals
41
Scavengers
animals that eat plants and animal material
42
Mould
a cavity in a rock that shows the shape of the hard parts of an organism