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Presentation transcript:

_____________________________________________ Explain what clues geologists can use to explain the earths history. 6 marks Key words Tectonic plates Mantle Magnetised Climate Fossils Sediment Ripples minerals QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Discuss the structure of the earth. Explain magnetic clues in rocks. Explain patterns found in sedimentary rocks Explain fossil evidence Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ Salt is extremely important in the food industry. It can be collected/extracted in three different ways. Underground mining, solution mining and from the sea. Discuss which method of salt extraction has the least impact on the environment. 6 marks Key words Extraction Rock salt Solution mining Deposits Dissolve Brine Evaporate Subsidence Pollution Purity QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Explain each type of extraction Discuss environmental impacts Give an opinion on which impacts the environment the least Provide evidence to support your opinion Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ Discuss the risks and benefits of using salt in the food industry. What can be done about those risks? 6 marks Key words Preservative Stroke Heart attack High blood pressure Processed Food Standards Agency GDA Risk Choice Advice QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints List reasons for the use of salt in the food industry List health implications of eating too much salt Discuss choices that people can make to reduce risk. Suggest what the government can do to reduce risk Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ Electrolysis is a method used to produce some very useful chemicals from salt solution. Discuss the products from the electrolysis of brine and their uses. 6 marks Key words Electrolysis Brine Salt solution Chlorine Disinfectants Hydrogen Fuel Ammonia Hydrogenation Sodium hydroxide Soap bleach QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Describe how chlorine, hydrogen and sodium hydroxide are produced List what products can be made from chlorine, hydrogen and sodium hydroxide Discuss the benefits of these products Explain why there is little waste products made by electrolysis Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ The data shows information from a river before and after an electrolysis plant was opened next to it. The plant was opened in 1963. Use the data to describe the change in the levels of mercury from 1956 to 1970 and suggest a reason for this. Discuss other environmental impact caused by electrolysis. 6 marks Key words Electrolysis Pollution Environment Impact Energy Toxic Resources QWC - Bubbles Year 1956 1958 1960 1962 1964 1966 1968 1970 Mercury level (ppm) 0.2 0.1 0.3 1.1 2 1.9 Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Describe the trend in the data over the years Describe the change in mercury levels after the electrolysis plant was opened Explain what problems the increase in mercury might cause Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ Chlorine is used in water treatment. Discuss the advantages and disadvantages of using chlorine to treat water. 6 marks Key words Chlorination Drinking Safe Treatment WHO Life expectancy Carcinogenic Respiratory Burn Risk QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Describe the benefits of using chlorine to treat water Describe the risks of using chlorine to treat water Compare the benefits and risks and discuss which is better Use evidence of how water treatment by chlorine has reduced illness/deaths Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar

_____________________________________________ Alkalis have been produced for hundreds of years. Explain how alkalis are useful and reasons why the methods of production has changed over the years. 6 marks Key words Neutralising soil Dyes Soaps Glass Sources Manufacturing Cost Pollution Waste Toxic Efficiency QWC - Bubbles Level 3 - 5to 6 marks Level 2 – 3 to 4 marks Level 1 – 1 to 2 marks Complex answer Extensive key words Logical order Excellent spelling, punctuation and grammar Hints Describe the Le Blanc process and electrolysis for producing alkalis Discuss how electrolysis caused less pollution than the L Blanc process Compare products made from Electrolysis and the Le Blanc process Explain which is more efficient Detailed answer Many key words Clear order Good spelling, punctuation and grammar _____________________________________________ Simple answer Few key words No order Poor spelling, punctuation and grammar