Geology Flashcards

1
Q

Igneous

A

Having solidified from lava or magma

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2
Q

Magma

A

Hot fluid underneath the Surface of the Earth.

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3
Q

Lava

A

Hot fluid erupted from a Volcano, on the Surface of the Earth or above it.

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4
Q

Intrusive

A

Solidified Magma Underground to form Intrusions

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5
Q

Extrusive

A

Lava flowing from a Volcano

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6
Q

Mineral

A

A solid, naturally occurring inorganic substance

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7
Q

Lithosphere

A

The Outer part of the earth, consisting of the crust and upper mantle

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8
Q

Asthenosphere

A

The Upper layer of the earth’s mantle, below the lithosphere

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9
Q

Crystal

A

A small piece of a substance that has formed naturally into a regular symmetrical shape.

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10
Q

Sedimentary Rock

A

Rocks formed from sediments deposited by water, wind or ice. The sediments are cemented together in layers, under pressure

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11
Q

Erosion

A

The wearing away and removal of soil and rock by natural elements, such as wind, waves, rivers and ice, and by human activity

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12
Q

Floodplains

A

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

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13
Q

Glaciers

A

Large bodies of ice that move down slopes and push boulders, rocks and gravel in front of them

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14
Q

Moraines

A

Deposit left by movement of a glacier

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15
Q

Sandstone

A

A sedimentary rock with medium-sized grains. The sand grains are cemented together by silica, lime or other salts.

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16
Q

Mudstone

A

A fine-grained, sedimentary rock without layering

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17
Q

Shale

A

A fine-grained sedimentary rock formed in layers by the consolidation of clay

18
Q

Siltstone

A

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

19
Q

Conglomerate

A

Sedimentary rock containing large particles of various sizes cemented together

20
Q

Limestone

A

A sedimentary rock formed from the remains of sea organisms. It consists mainly of calcium carbonate.

21
Q

Coal

A

A sedimentary rock formed from dead plants and animals that were buried before rotting completely

22
Q

Rock Salt

A

A sedimentary deposit formed when a salt lake or seabed dried up. Its main chemical is sodium chloride

23
Q

Mineral Ores

A

Minerals containing metals of value are called Mineral Ores.

24
Q

Mining

A

The process of obtaining coal or other minerals from a mine.

25
Environmental Impact Statement (EIS)
A document prepared to describe the effects for proposed activities on the environment.
26
Rehabilitated
The action of restoring something that has been damaged to its former condition.
27
Overburden
Rock or Soil overlying a mineral deposit or other underground feature.
28
Open-Cut Mining
A surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow.
29
Underground Mining
Underground mining is the process of extracting minerals and ores that are buried too far underground to be mined using surface mining methods.
30
Stone Age
A time in history when early humans used tools and weapons made out of stone.
31
Alloy
A metal made by combining two or more metallic elements.
32
Flint
A hard grey rock consisting of nearly pure silica.
33
Percussion Flaking
The shaping of a stone implement by striking or chipping off flakes with another stone or a piece of wood, bone, or antler.
34
Fossil
The remains or impression of a prehistoric plant or animal embedded and preserved in rock.
35
Folding
The buckling of rocks caused when rocks are under pressure from both sides.
36
Palaeontologist
A Scientist who studies Fossils.
37
Relative Age
The age of a rock compared with the age of another rock.
38
Carnivore
An Animal that eats other Animals.
39
Scavenger
Animals that eat Dead Plant and Animal material.
40
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.
41
Trace Fossils
Fossils that provide evidence, such as footprints, that an organism was present when the rock was formed.
42
Extinct
Describes volcanoes that are no longer active. Extinct volcanoes have not erupted for thousands of years and show no sign of future eruption.