1.7 ROCKS AND THEIR USES

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Completar frases 1.7 ROCKS AND THEIR USESVersión en línea Completa el texto sobre los apuntes de la unidad 1.7. Cuándo termines un texto y le des a comprobar te pasará al siguiente texto. por Gonzalo Alonso Leiro 1 Minerals and rocks form . The ground we walk on , the and the of the are all of . 2 Rocks are . A mineral is a and has a , and that are well 3 Rocks formed by of just one are called . An is marble . 4 Rocks made of fragments of are known as and . 5 To identify rocks with the , we need a based on a of : 6 1 . Does it to be or ? Appearance is a , but it would look under a . 2 . Is it made of or , or are they too to ? 3 . How does its look ? Does it have , or other ? 4 . Does it with ? Only react with . The determining is . 7 Types of rocks : 1 . Igneous or : These are when ( rocks ) Earth ? s and . a . ( intrusive ) rocks . b . ( extrusive ) rocks . 2 . Sedimentary . Because of the or , break in that are to be after a of and in . 3 . Metamorphic . Formed by the of and / or , without a state . 8 The rock cycle The rock cycle is a of that a to another of . Any rock can be into of . These occur very , over of . 9 Rocks change very slowly ( wind and water / rain ) . Can cause in the that the can the ( ) weathered materials ( ) travel in , the or in . This causes ( + ) .