Limestone quarries How is limestone made?What is the chemical name for limestone? Name FIVE disadvantages of quarrying Name some advantages of quarrying.

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Presentation transcript:

Limestone quarries How is limestone made?What is the chemical name for limestone? Name FIVE disadvantages of quarrying Name some advantages of quarrying What do quarry managers do to reduce the impact: Name FIVE uses of limestone. (Ext: Can you state why it is used for this purpose?) How many tonnes of limestone is needed to build a house?? Write the equation for the heating of limestone. Write the equation for what happens when we add water to calcium oxide

Limestone quarries How is limestone made?What is the chemical name for limestone? Name FIVE disadvantages of quarrying Name some advantages of quarrying What do quarry managers do to reduce the impact: Name FIVE uses of limestone. (Ext: Can you state why it is used for this purpose?) How many tonnes of limestone is needed to build a house?? Write the equation for the heating of limestone. Write the equation for what happens when we add water to calcium oxide

Limestone quarries mark scheme How is limestone made? Remains of shells and sea creatures, formed under the sea millions of years ago What is the chemical name for limestone? Calcium carbonate Name FIVE disadvantages of quarrying Explosions - blasting Traffic – lorries travelling past constantly makes the landscape look nasty Vegetation is covered in white dust noisy permanently damages the landscape Name some advantages of quarrying Provides jobs for locals Supplies vital materials What do quarry managers do to reduce the impact: Monitor the noise and vibration to ensure they are within the limits allowed lorries are washed lorries are covered in sheets Managers restore the land as they go Plans to turn quarries into lakes Name FIVE uses of limestone. (Ext: Can you state why it is used for this purpose?) Farmers to neutralise acid soil Scultpures – last a long time Construction – concrete, glass, cement, roads and motorways (Strong and hard properties) cosmetics, medicines, toothpaste bread – source of calcium Extraction of iron How many tonnes of limestone is needed to build a house?? 80 tonnes Write the equation for the heating of limestone. Calcium carbonate + heat  carbon dioxide + calcium oxide Write the equation for what happens when we add water to calcium oxide Calcium oxide + water  calcium hydroxide