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
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