[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-207370-105":3,"detail-sidebar-cat-0-en-105":74,"doc-detail-207370-en":124},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":67,"head_meta":69,"extra_data":71,"updated_unix":73},105,"en","644038-question-paper-combined-science","644038 Question Paper - Combined Science","","Combined Science question paper sections focus on the greenhouse effect, carbon dioxide and other greenhouse gases, and the electromagnetic radiation cycle (absorbed, scattered, reflected, infrared emission, and re-emission directions). Students interpret a graph showing global carbon mass released from 1900 to 2014, describing trends, suggesting explanations, and identifying reasons the data may be inaccurate. Further tasks cover carbon capture and storage, comparing non-renewable and renewable energy, carbon-neutral reasoning for biofuels, and applying experimental conditions to predicted results, including water uptake rate calculations.",{"@graph":14,"@context":66},[15,34,49],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/644038-question-paper-combined-science/207370/",4,{"url":32,"name":10,"@type":35,"author":36,"headline":10,"publisher":39,"fileFormat":42,"inLanguage":8,"description":12,"dateModified":43,"datePublished":43,"encodingFormat":42,"isAccessibleForFree":44,"interactionStatistic":45},"DigitalDocument",{"name":37,"@type":38},"Gelato","Person",{"url":19,"name":40,"@type":41},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":46,"interactionType":47,"userInteractionCount":4},"InteractionCounter",{"@type":48},"ViewAction",{"@type":50,"mainEntity":51},"FAQPage",[52,58,62],{"name":53,"@type":54,"acceptedAnswer":55},"How does the greenhouse effect warm the Earth according to the question?","Question",{"text":56,"@type":57},"The Earth receives electromagnetic radiation from the Sun; some is absorbed by the Earth’s surface, which warms it. The emitted radiation is then emitted again in all directions after being re-emitted by greenhouse gases in the atmosphere.","Answer",{"name":59,"@type":54,"acceptedAnswer":60},"What trend is expected from the carbon released graph, and how should it be explained?",{"text":61,"@type":57},"Students must describe the overall trend shown from 1900 to 2014 and give two possible explanations. The explanations should relate to reasons carbon released worldwide might increase or change over time.",{"name":63,"@type":54,"acceptedAnswer":64},"Why are biofuels described as carbon neutral, and which statements support this?",{"text":65,"@type":57},"Biofuels are carbon neutral because the amount of carbon dioxide released when they burn is matched by the carbon dioxide taken in during photosynthesis. The question asks students to tick two statements that directly support this balance.","https://schema.org",{"og:url":32,"og:type":68,"og:title":10,"og:site_name":40,"og:description":12},"article",{"robots":70,"canonical":32},"index,follow",{"doc_id":72,"site_id":7},207370,1788599328,{"code":4,"msg":75,"data":76},"success",[77,81,85,88,93,98,103,108,113,116,120],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":78,"show_sort_weight":79,"slug":80},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":82,"show_sort_weight":83,"slug":84},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":86,"slug":87},70,"exam",{"id":89,"doc_module":4,"doc_module_name":25,"category_name":90,"show_sort_weight":91,"slug":92},5,"Comic",60,"comic",{"id":94,"doc_module":4,"doc_module_name":25,"category_name":95,"show_sort_weight":96,"slug":97},6,"Technology",50,"technology",{"id":99,"doc_module":4,"doc_module_name":25,"category_name":100,"show_sort_weight":101,"slug":102},7,"Healthcare",40,"healthcare",{"id":104,"doc_module":4,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},8,"Research & Report",30,"research-report",{"id":109,"doc_module":4,"doc_module_name":25,"category_name":110,"show_sort_weight":111,"slug":112},9,"Religion & Spirituality",20,"religion-spirituality",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":114,"show_sort_weight":111,"slug":115},"World Cup","world-cup",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":118,"show_sort_weight":117,"slug":119},10,"Lifestyle","lifestyle",{"id":121,"doc_module":4,"doc_module_name":25,"category_name":122,"show_sort_weight":89,"slug":123},19,"General","general",{"code":4,"msg":75,"data":125},{"doc_id":72,"user_id":126,"nickname":37,"user_avatar":127,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":128,"file_id":129,"file_url":130,"file_type":131,"file_size":132,"view_count":4,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":133,"language":134,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":135,"faqs":136,"seo_title":137,"seo_description":12,"update_tm":73,"read_time":101},19241457091524,"https://us-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","2  \nAnswer all the questions.  \n1 (a) Complete the sentences about the greenhouse effect.  \nUse words from the list.  \nYou can use each word once, more than once or not at all.  \nabsorbed microwave reflected methane  \nultraviolet scattered nitrogen infrared  \nThe Earth receives electromagnetic radiation from the Sun. Some of this radiation [is .............................................. by](is .............................................. by) the Earth’s surface, causing it to warm up............................................... radiation is then emitted from the Earth’s surface. Some of this radiation is then .............................................. by greenhouse gases in the atmosphere such as carbon dioxide and . ............................................. , which is then re-emitted in all directions.  \n[4]  \n(b) Carbon dioxide is a greenhouse gas.  \nFig. 1.1 shows the mass of carbon released worldwide every year from 1900 to 2014.  \nMass of carbon released worldwide (million metric tonnes)  \n© OCR 2020  \n11000  \n10 000 9000 8000 7000 6000 5000 4000 3000 2000 1000  \n0  \n1900 1910 1920 1930 1940 1950 1960 Year  \nFig. 1.1  \n1970 1980 1990 2000 2010  \n3  \n(i) Describe the trend shown in Fig. 1.1 and suggest two possible explanations for this trend.  \nTrend .................................................................................................................................  \n...........................................................................................................................................  \nExplanation 1 ....................................................................................................................  \n...........................................................................................................................................  \nExplanation 2 ....................................................................................................................  \n...........................................................................................................................................  \n[3]  \n(ii) Give one reason why the data in Fig. 1.1 may be inaccurate.  \n...........................................................................................................................................  \n..................................................................................................................................... [ 1]  \n(iii) Describe two effects of the trend seen in Fig. 1.1.  \nEffect 1 ...............................................................................................................................  \n...........................................................................................................................................  \nEffect 2 ..............................................................................................................................  \n...........................................................................................................................................  \n[2]  \n© OCR 2020 Turn over  \n4  \n(c) Carbon capture and storage is a process where carbon dioxide is collected and stored underground.  \nSuggest two negative effects of carbon capture and storage on the environment. 1 ................................................................................................................................................  \n...................................................................................................................................................  \n2 ................................................................................................................................................  \n...................................................................................................................................................  \n[2]  \n(d) (i) Coal and oil are non-renewable sources of energy.  \nBiofuels such as wood or str","cbCaie5gRKjijjxW","https://ap.wps.com/l/cbCaie5gRKjijjxW","pdf",849725,16,"English","# Greenhouse effect and radiation cycle\n## Greenhouse effect sentence completion\n## Interpreting global carbon release graph\n# Carbon capture and storage\n## Negative environmental effects\n# Energy resources\n## Non-renewable vs renewable energy\n## Biofuels carbon neutral statements\n# Environmental conditions and experiments\n## Predicted data under higher temperature\n## Capillary tube water uptake rate calculation","[{\"question\":\"How does the greenhouse effect warm the Earth according to the question?\",\"answer\":\"The Earth receives electromagnetic radiation from the Sun; some is absorbed by the Earth’s surface, which warms it. The emitted radiation is then emitted again in all directions after being re-emitted by greenhouse gases in the atmosphere.\"},{\"question\":\"What trend is expected from the carbon released graph, and how should it be explained?\",\"answer\":\"Students must describe the overall trend shown from 1900 to 2014 and give two possible explanations. The explanations should relate to reasons carbon released worldwide might increase or change over time.\"},{\"question\":\"Why are biofuels described as carbon neutral, and which statements support this?\",\"answer\":\"Biofuels are carbon neutral because the amount of carbon dioxide released when they burn is matched by the carbon dioxide taken in during photosynthesis. The question asks students to tick two statements that directly support this balance.\"}]","644038 Question Paper - Combined Science | PDF"]