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socials g9 rocks
rocks stack 1
Question | Answer |
---|---|
give two examples of metamorphic rocks? | Marble and gneiss. |
What are the three characteristics of metamorphic rocks? | Very dense, Melding of minerals and resistint to erosion. |
How are metamorphic rocks formed? | Metamorphic rocks are formed when pre-existing rocks are subjected to great heat and pressure resulting in a signifigant chamge in the rocls structure. |
What are three examples of metamorphic rocks changing? | limestone becomes marblegranite becomes gneiss shale becomes slate. |
What are the 4 characteristics of sedimantary rocks? | Not interlocking, distinct layering, less resistent to erosion and may contain fossils. |
What are 4 examples of sedimentary rocks? | Sandstone, limestone, coal and siltstone. |
How are sedimentary rocks formed? | Sedimentary rocks are formed when the agents of erosion breakdown pre-existing rocks into sediments which are subsequently deposited, compressed and cemented together. |