Geography-Chapter 5-Rocks
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10 Terms
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What are the three main rock types?
Igneous, Sedimentary, and Metamorphic.
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How are igneous rocks formed?
From cooled magma or lava.
3
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Name one intrusive igneous rock.
Granite.
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Name one extrusive igneous rock.
Basalt.
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How are sedimentary rocks formed?
From compressed sediments or remains of plants and animals.
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Give two examples of sedimentary rocks.
Limestone and Sandstone.
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How are metamorphic rocks formed?
From other rocks changed by heat and pressure.
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Give two examples of metamorphic rocks.
Marble (from limestone), Quartzite (from sandstone).
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Which rock forms Ireland’s Central Plain?
Limestone.
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Which rock forms the Wicklow Mountains?
Granite.
Note 
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