Geology Flashcards

1
Q

igneous rock

A

come from magma and lava

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2
Q

magma

A

liquid rock the stays under the surface of the earth

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3
Q

lava

A

liquid rock that is above the surface of the earth

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4
Q

extrusive rock

A

when rocks that drys when it is above the surface of the earth

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5
Q

intrusive rock

A

when rocks dry when they are under the surface

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6
Q

mineral

A

a solid naturally occurring substance

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7
Q

lithosphere

A

the rigid outer layer of the earth

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8
Q

Asthenosphere

A

the upper layer of the mantle

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9
Q

crystal

A

a piece of a homogeneous solid substance

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10
Q

erosion

A

the wearing away of something naturally

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11
Q

floodplain

A

a flat plain near a river where sediment is deposited

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12
Q

glaciers

A

large bodies of ice

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13
Q

moraines

A

rocks that are moved by glaciers

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14
Q

sandstone

A

sediment rock that has been compressed small pieces of sand into a rock

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15
Q

mudstone

A

a rock made from fine grains

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16
Q

shale

A

a fine grain sedimentary rock that is made from hardening clay

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17
Q

siltstone

A

a sedimentary rock that has one particle different from mud or sand stone

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18
Q

conglomerate

A

a sedimentary rock that has different rock cemented together

19
Q

limestone

A

a sedimentary rock formed from sea organism

20
Q

coal

A

a sedimentary rock that is formed from dead plants and animals

21
Q

salt rock

A

a sedimentary rock formed when a seabed or salt lake drys up

22
Q

metamorphic rocks

A

they are rock that go though change

23
Q

metamorphism

A

when something changes into something else

24
Q

mineral ores

A

rocks mined to obtain metal

25
mining
the extraction of natural resources
26
environmental impact statement
study of the affect in plannedproject on the earth
27
rehabilitated
once something ahas been restored
28
overburded
waste rock removed for below topsoil
29
open cut mining
when rocks are blown up on the surface of the earth so they an get to the rocks under neath
30
under ground mining
mining underground
31
stone age
the first known period of a prehistoric human culture characterized by the use of stone
32
alloy
a metal made by combining to or more metallic elements
33
flint
a grey rock that consists of nearly pure silica
34
percussion flaking
shape of a stone or implemint by striking and chipping flackes off of a rock, bone or antler
35
fossil
any remains, impression, or trace of an animal or plant of a former geological age; evidence of life in the past
36
folding
the buckling of rocks. It is caused when rocks are under pressure from both sides.
37
palaeontologists
a scientist who studies fossils
38
relative age
the age of a rock compared with the age of another rock
39
carnivores
animal that eats other animals
40
scavengers
animals that eat dead plant and animal material
41
mould
cavity in a rock that shows the shape of the hard parts of an organism; types of fungi found growing on the surface of foods
42
trace fossils
fossils that provide evidence, such as footprints, that an organism was present when the rock was formed
43
extinct
describes volcanoes that are no longer active. Extinct volcanoes have not erupted for thousands of years and show no sign of future eruption.