Radioactive dating gcse
Radioactive dating gcse - intelligent dating headlines
Using such terms as radioactive ‘decay’ seemed to suggest that the atoms disappeared so even for those students who did have an understanding of radioactivity that involves the atom, they often also predict that half of the radioactive object will disappear after a half-life.(p.353) Ref: is likely that pupils will be taught radioactivity in one go as part of their GCSE course, so the idea of progression is not so significant here.
The energy comes from the direct transfer of some of the nuclear mass of atoms into energy.
Radioactivity is not usually introduced into the curriculum before KS4 although pupils may well experience the idea in some form much earlier from their parents of the media.
The topic has a huge potential for misconception and fear and these are explored from the perspectives of pupils and science teachers.
Even with these students they often thought that only coulombic forces were involved, and were unaware of the ‘strong’ nuclear force.
In a further set of interviews and questions Prather found that his students thought that either the mass and/or volume of a radioactive material would decrease by half in the period of a half-life.
The resource Science Issues CD is a multimedia resource developed to give trainee teachers an understanding of the key ideas.
It is written for adults, but is pitched at about GCSE standard, so will be of use for both the teachers in training and their KS4 pupils.1.2 Radioactivity and the National Curriculum According to the 1999 KS4 National Curriculum Programme of Study Radioactivity (Science 4 para 6) students should be taught: And in the new specifications for GCSE from 2006, the QCA requires: (para 3.7) All specifications with the title GCSE Science should set the skills, knowledge and understanding, outlined in paragraph 3.6, entirely in the context of: 3.7 (iii) energy, electricity and radiationsc) radiations, including ionising radiations, can transfer energy And: At least half of each specification with the title GCSE Additional Science should set the skills, knowledge and understanding, …in the context of the following content.(iii) Physics b) Nuclear changes Nuclear changes within unstable atoms cause random emissions of particles.However, it is important that students are familiar with concepts such as electrons; nucleus (protons and neutrons); (relative) atomic mass; atomic number and the Periodic Table.Children are likely to come to their GCSE session with some (popular) ideas about the dangers of radioactivity, and they will have some knowledge of the electronic structure of the atom.During a primary or secondary BEd, PGCE or GTP we hope that those learning to become science teachers will be able to challenge their own understanding of science and scientific concepts.