Rocks And Minerals Flashcards

1
Q

Mineral

A

Minerals are different types of rocks that are found in the earth.

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2
Q

Lithosphere

A

The outer part of the earth called the crust.

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3
Q

Magma

A

Very hot fluid that is inside the volcano.

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4
Q

Sediments

A

Something that floats to the bottom of a liquid.

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5
Q

Native

A

Someone or something that lives in the area.

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6
Q

Element

A

Element means that it is a part of something.

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7
Q

Crystals

A

A piece of precious rock sometimes found in caves.

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8
Q

Lustre

A

A gentle sheen or soft glow.

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9
Q

Streak

A

A long thin line.

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10
Q

Hardness

A

How hard something is.

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11
Q

Lava

A

Magma on the earths surface.

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12
Q

Igneous Rocks

A

Rocks formed from lava cools above the earths surface.

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13
Q

Viscosity

A

How fast a liquid moves.

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14
Q

Extrusive Rocks

A

Igneous rocks forms when lava cools above the earths surface.

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15
Q

Molten

A

Lava when it is inside the volcano.

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16
Q

Pumice

A

Is a type of rock that is very light.

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17
Q

Scoria

A

A dark, igneous rock formed from gassy lava.

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18
Q

Abrasive

A

A property of an object or material that easily scratches another.

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19
Q

Basalt

A

A dark, heavy igneous rock that is commonly seen

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20
Q

Obsidian

A

A dark shiny rock that is formed when lava cools down quickly.

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21
Q

Intrusive rocks

A

Igneous rocks that forms when magma cools below the earths surface.

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22
Q

Batholiths

A

Intrusive rock mass that measures more than 100 kilometres across.

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23
Q

Granite

A

A hard igneous rock and with different coloured crystals.

24
Q

Sedimentary Rocks

A

Rocks made partly from water,wind or ice. The sediments get put together in layers, under the pressure.

25
Erosion
The process of eroding or being eroded by wind, water, or other natural agents.
26
Foodplaines
Flat open land beside a river where sediments are deposited during floods.
27
Glaciers
Large bodies of ice that fall down mountains.
28
Moraines
Deposit left by the movement of a glacier.
29
Mudstone
A fine-grained, sedimentary rock without layers.
30
Sandstone
A sedimentary rock with medium sized grains.
31
Shale
A fine grained sedimentary rock formed in layers by the consolidation of clay.
32
Siltstone
A sedimentary rock with with a particle size between that of sandstone and mudstone.
33
Conglomerate
Sedimentary rock containing large particles of various sizes cemented together.
34
Limestone
A sedimentary rock formed from the remains of sea organisms.
35
Coal
A sedimentary rock formed from dead plants and animals that were buried before rotting completely.
36
Rock salt
A sedimentary deposit formed when a salt lake or seabed dried up.Its main chemical is sodium chloride.
37
Mineral Ore
Rocks mined to obtain a metal or other chemical with in them.
38
Mining
Extraction of natural resources from the earth.
39
Environmental impact statement.
Study of the possible effects of a planned project on the environment.
40
Rehabilitated
Restored to its previous condition.
41
Overburden
Waste rock removed from below topsoil.
42
Open-cut mining
Mining that scours out of soil and rocks on the surface of the land.
43
Underground Mining
Mining that uses shafts and tunnels to remove rock below the surface.
44
Stone Age
The time about 2 million years ago where humans used stone to make most of their tools.
45
Alloy
A mixture of metals with a non-metal or another metal.
46
Flint
A fine-grained sedimentary rock which leaves a very sharp edge when broken.
47
Percussion Flaking
A process in which a tool stones such as Flint or obsidian were struck with harder stones.
48
Fossil
Any remains,impression, or trace of an animal or plant of a former geological age.
49
Palaeontologists
A scientist who studies fossils.
50
Folding
The bucking of rocks.
51
Relative Age
The age of a rock compared with age of another rock.
52
Carnivores
Animals that eat other animals.
53
Scavengers
Animals that eat dead plant and animal material.
54
Mould
Captivity in a rock that shows the shape of hard parts of an organism.
55
Trace fossils
Fossils that provide evidence.
56
Extinct
Explains a volcano that is no longer active.