Carbon dating gcse questions

Especially seeing as most of the brightest students in our school found it ridiculous!'One student complained that only eight of the 36 subjects they were advised to revise in the official revision guides came up in the paper, while another showed the 'amount of paper wasted' for revision Jack Green, 16, a pupil at South Hunsley school in North Ferriby, East Yorkshire, said pupils were 'worried' about their grades as they thought the exam was very different to the syllabus they had been taught.

Through photosynthesis carbon dioxide enters plants and algae, bringing radiocarbon into the food chain.

Radiocarbon then enters animals as they consume the plants (figure 2).

When ‘parent’ uranium-238 decays, for example, it produces subatomic particles, energy and ‘daughter’ lead-206.

Isotopes are important to geologists because each radioactive element decays at a constant rate, which is unique to that element.

I, personally, was offended by the question, asking to compare the favourite type of alcoholic beverage, of two genders.

A spokesman said: 'Exams aren't meant to be easy and students are obviously going to tweet about that, but there was nothing wrong with this paper.

Each original isotope, called the parent, gradually decays to form a new isotope, called the daughter.

Each isotope is identified with what is called a ‘mass number’.

Since the atmosphere is composed of about 78 percent nitrogen,2 a lot of radiocarbon atoms are produced—in total about 16.5 lbs. These rapidly combine with oxygen atoms (the second most abundant element in the atmosphere, at 21 percent) to form carbon dioxide (CO This carbon dioxide, now radioactive with carbon-14, is otherwise chemically indistinguishable from the normal carbon dioxide in the atmosphere, which is slightly lighter because it contains normal carbon-12.

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