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This is the British International School Phuket’s IB maths exploration (IA) page.This list is for SL and HL students – if you are doing a Maths Studies IA then go to this page instead.PART 1: Back to Basics PART 2: Problems with the Assumptions PART 3: Making Sense of the Patterns This three-part series will help you properly understand radiometric dating, the assumptions that lead to inaccurate dates, and the clues about what really happened in the past.Most people think that radioactive dating has proven the earth is billions of years old.Important Be aware that this page gets a large amount of traffic from IB students – do not simply copy articles.

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It is still safe to conclude that the earliest known undisputed examples of true writing in China (that is, symbols used to fully record language rather than isolated meanings) are the oracle bones of the late Shang dynasty, c. that were pitted and inscribed with markings known as the Jiahu symbols.To date a radioactive rock, geologists first measure the “sand grains” in the top glass bowl (the parent radioisotope, such as uranium-238 or potassium-40).They also measure the sand grains in the bottom bowl (the daughter isotope, such as lead-206 or argon-40, respectively).Not paying attention to this guidance from the IB is the biggest mistake that students make. Code Breaking You may also enjoy taking part in our school’s code breaking website.It could easily mean the difference between coursework which gets 17/20 and one which gets 11/20. There are 8 levels of coding difficulty – with each code giving you a password to access the next clue.I've been poking about on the internet again (as you do) and found a whole load of stuff by creationists about the problems with carbon 14 radiometric dating.Specifically they report (with some glee) that coal has been found to contain measurable amounts of carbon14 which it should not of course because it is about 300 million years old and dates from the carboniferous period.In fact, the experiments cited by the creationists appear to be attempts to establish the measurement error of there equipment.Older carbon dating techniques directly detected decays of C14 atoms. The most common contaminant is nitrogen, 0.1% in gem-quality diamonds.Since the second half of the 20th century, inscriptions have been found on pottery in a variety of locations in China, such as Banpo near Xi'an, as well as on bone and bone marrows at Hualouzi, Chang'an County near Xi'an.These simple, often geometric, marks have been frequently compared to some of the earliest known Chinese characters appearing on the oracle bones, and some have taken them to mean that the history of Chinese writing extends back over six millennia.Yet this view is based on a misunderstanding of how radiometric dating works.Part 1 (in the previous issue) explained how scientists observe unstable atoms changing into stable atoms in the present.However, only isolated instances of these symbols have been found, and they show no indication of representing speech or of the non-pictorial processes that a writing system requires.or signs for other purposes such as identification is a highly controversial one, and the debate still continues today.

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