The Rock Cycle Answer Sheet

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THE ROCK CYCLE ANSWER SHEET YOU WILL NEED: There are three main types of rocks: igneous, sedimentary and metamorphic Geological Society ‘The Rock Cycle' rocks and these rocks all form in different ways. Fill in the questions below factsheet test your rock knowledge. Colouring pencils Basalt and granite rock samples 1: THE ROCK CYCLE (optional) Use the phrases in the word bank below to label the different processes and rock types in the rock cycle. WORD Metamorphosis Erosion & transport Metamorphic rock Crystallisation of Weathering Melting Uplift magma Sedimentary rock BANK: Burial & compaction Igneous rock Deposition of sediments Weathering Geolsoc.org/factshe ets Erosion & transport Deposition of sediments Igneous rock Crystallisation of magma Burial & Uplift compaction Sedimentary rock Melting Metamorphosis Metamorphic rock THE ROCK CYCLE ANSWER SHEET 2: THE ROCK CYCLE a) Use the space below to draw the stages in which a sedimentary rock might form. Example: WEATHERING EROSION River DEPOSITION Ice in cracks Sea Sediment Land Rock River bed COMPACTION & BURIAL SEDIMENTARY ROCK Layers of sediment Basalt Layers of rock Granite 3: IGNEOUS ROCKS Granite and basalt are two types of igneous rock. Granite has large crystals whereas basalt has tiny crystals. a) Label the diagram to show where each rock forms. Basalt Granite b) Why do you think granite usually has larger crystals than basalt? Tip: Think about temperature. Lava cools down very quickly. The crystals in basalt only have a short time to grow so they are small. Magma deep within the Earth takes thousands of years to cool down. The crystals in granite have more time to grow, so they are larger. 4: METAMORPHIC ROCKS How can a sedimentary rock become a metamorphic rock? If a sedimentary rock is buried deep underground it will experience extreme heat and pressure. This can cause grains to be stretched, squashed and melted, turning the sedimentary rock into a metamorphic rock. .

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