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Passage I examines coral bleaching by comparing three scientists’ explanations involving ocean temperature stress, ocean acidification chemistry, and sea-level driven light reduction affecting algae photosynthesis. Multiple-choice questions assess cause selection, reasoning differences, and expected outcomes from rising atmospheric carbon dioxide. Passage II begins with calorimetry and heat capacity fundamentals.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/practice-science-act-test-1-notes-on-the-practice-exam-practice-exam/431211/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/practice-science-act-test-1-notes-on-the-practice-exam-practice-exam/431211.png","ImageObject",300,407,{"name":92,"@type":93},"Jiven","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-19","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"How long is the practice exam session and what should be avoided during the test?","Question",{"text":112,"@type":113},"Set a timer for 35 minutes in a quiet place. Avoid pausing and do not peek ahead at the answers and hints while the timer is running.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"According to Scientist 1, what triggers coral bleaching?",{"text":117,"@type":113},"Scientist 1 attributes coral bleaching to an increase in ocean water temperature, which stresses corals and leads them to eject the algae, leaving a white skeleton.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the view of Scientist 2 differ from Scientists 1 and 3?",{"text":121,"@type":113},"Scientist 2 focuses on ocean acidification, describing a change in the ocean environment driven by carbon dioxide dissolving to form carbonic acid that reacts with the coral’s calcium carbonate skeleton.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},431211,1790869224,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":56,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},1099513958607,"https://ap-avatar.wpscdn.com/avatar/100002390cf8733938c?x-image-process=image/resize,m_fixed,w_180,h_180&k=1778829742770036399","Practice Science ACT® Test 1  \nNotes on the Practice Exam  \nThis practice exam has three major sections to it: test, answer key with hints, and scoring guide. You’ll get the most out of this practice if you make the experience as authentic as possible so carefully follow the directions below. Good luck.  \nDirections  \nFind a quiet place to spend the next hour or two. Clear away all distractions and set a timer for 35 minutes. Once you start the timer resist the urge to pause for any reason or to peek ahead at the answers and hints. Once the timer goes off stop all work on test. Use the answer key to correct your test and the scoring guide to estimate your score on this practice exam. Lastly, go back through the exam using the hints to brush up on the ones you missed.  \nPractice Exam 1  \nPassage I  \nCorals are marine invertebrates that live in colonies of identical individuals called polyps. Corals secrete calcium carbonate (CaCO3) to form a hard skeleton that spans an entire colony. Corals obtain most of their energy and nutrients from algae called zooxanthellae that live within the coral tissue. The algae benefit from the polyps’carbon dioxide and nitrogenous waste. The algae are colored, and the coral skeletons are white. Because of this, the coral will experience bleaching and appear white when the algae population is damaged or absent. Three scientists discuss their beliefs and reasoning behind why coral beaching occurs.  \nScientist 1  \nCoral bleaching is caused by an increase in ocean water temperature, particularly at the surface. Corals live in a very narrow range of temperatures (23° -29° C) and cannot survive in temperatures below 18 °C. Even a small increase in water temperature causes stress to corals. When under short-term stress, the coral will eject the algae, leaving the coral with only a skeleton that appears white.  \nScientist 2  \nCoral bleaching is caused by ocean acidification.  \nOcean acidification is caused by increased quantities of atmospheric carbon dioxide dissolving in water to form carbonic acid (CO2 + H2O → H2CO3) . The carbonic acid reacts with the corals’calcium carbonate skeleton, causing the skeleton to dissolve. The algae live within the skeleton, so as the skeleton becomes smaller, the algae population declines. In addition, increasingly acidic water adds stress to the algae, which can also cause the algae population to decline. With fewer algae present, the coral appears white.  \nScientist 3  \nRising sea levels are the primary cause of coral bleaching. As the sea level rises, the coral becomes submerged under additional water. As the depth of water increases, less light is able to penetrate through the water to reach the coral and algae. Without light, the algae cannot undergo photosynthesis to create energy for themselves or for the coral, leading to the death of the algae and coral bleaching.  \n1. Sedimentation, the process of suspended particles settling, has also been suggested as a cause of coral bleaching. Which scientist would most likely agree with this cause?  \nA. Scientist 1, because sediment only exists at relatively high temperatures.  \nB. Scientist 2, because sediment is acidic.  \nC. Scientist 3, because the sediment will block light from reaching the algae and coral.  \nD. None of the scientists would agree, since sediment is not related to temperature, acidity, or light.  \n© 2013 Sophia Learning, LLC.  \nPractice Science ACT® Test 1  \n2. Recent observations show atmospheric concentrations of carbon dioxide are increasing, and the increase in carbon dioxide leads to higher average global temperatures. Which two scientists would expect these changes to directly lead to coral bleaching, based on their views of the cause of coral bleaching?  \nF. Scientist 1 and Scientist 2  \nG. Scientist 1 and Scientist 3  \nH. Scientist 2 and Scientist 3  \nJ. Scientist 1 only  \n3. How could the relationship between coral and algae be described?  \nA. Mutualistic, because both species benefit from one ","cbCaiaRaCfDdIXRw","https://ap.wps.com/l/cbCaiaRaCfDdIXRw","pdf",478010,"English","# Notes on the Practice Exam\n## Directions\n# Practice Exam 1\n## Passage I\n## Passage II","[{\"question\":\"How long is the practice exam session and what should be avoided during the test?\",\"answer\":\"Set a timer for 35 minutes in a quiet place. Avoid pausing and do not peek ahead at the answers and hints while the timer is running.\"},{\"question\":\"According to Scientist 1, what triggers coral bleaching?\",\"answer\":\"Scientist 1 attributes coral bleaching to an increase in ocean water temperature, which stresses corals and leads them to eject the algae, leaving a white skeleton.\"},{\"question\":\"How does the view of Scientist 2 differ from Scientists 1 and 3?\",\"answer\":\"Scientist 2 focuses on ocean acidification, describing a change in the ocean environment driven by carbon dioxide dissolving to form carbonic acid that reacts with the coral’s calcium carbonate skeleton.\"}]","Practice Science ACT® Test 1 - Notes on the Practice Exam - Practice Exam | PDF",1790654828,48]