Geolgy

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  • Created by: 720414
  • Created on: 17-11-13 00:54
Explain Extrusive Rocks
Extrusive Rocks grow above the earths surface, this can also include lave spilling from water volcanoes examples can include PUMICE SCORIA AND BASALT
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Explain Intrusive Rocks
Intrusive Rocks grow below the earths surface, the can be seen once the soil above them erodes Examples include GRANITE AND BATHOILTHS
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How does cooling affect the size of the rocks
The longer the period of time under the ground the larger the rocks
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How does erosion and water help the formation of sedimentary rocks
Erosion helps to form the rocks and the water seeps in bringing in new chemicals
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How are sediments formed
First the sediments are laid down by wind water ice in horizontal layers, then the grains are squashed together, Water comes in bringing new chemicals, once the water leaves crystals are made
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Give 3 examples of sedimentary rocks their physical properties and their uses
Sandstone is hard and strong and is used for walls in buildings, Limestone is hard and strong and has a weird pattern this is used for plaster and Coal is weak but tough and is used for fuel
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What are the 2 things that cause rocks to become metamorphic rocks
Heat and Pressure
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Give examples of 3 sedimentary rocks that have been changed to a metamorphic rock and their uses
Shale- Slate Buildings roof and tiles, Sandstone- quartz Jewellery, Limestone- Marble statues
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Give the definition of minerals
Rocks are made of substances called minerals. Any naturally occurring solid substance with a chemical is a mineral
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Define Mineral ore
MInerals containing metals this can take along period of time
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Examples of Mineral Ore
Magnesium and Aluminium
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Explain Weathering
Weathering turns rocks into fragments
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Explain Erosion
Erosion moves fragments by wind water etc
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list the factors of weathering
Wind, Water, Ice, Glaciers
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How is soil formed and what is it made of
It is made of rocks and other organisms these are so worn down they create soil
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Other cards in this set

Card 2

Front

Explain Intrusive Rocks

Back

Intrusive Rocks grow below the earths surface, the can be seen once the soil above them erodes Examples include GRANITE AND BATHOILTHS

Card 3

Front

How does cooling affect the size of the rocks

Back

Preview of the front of card 3

Card 4

Front

How does erosion and water help the formation of sedimentary rocks

Back

Preview of the front of card 4

Card 5

Front

How are sediments formed

Back

Preview of the front of card 5
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