Difference between revisions of "Radioactivity"
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| + | :[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Activity (radioactivity), page 118, GCSE Combined Science Trilogy; Physics, CGP, AQA'] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Activity (radioactivity), page 130, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA'] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09659 ''Activity (radioactivity), page 200, GCSE Combined Science; The Revision Guide, CGP, AQA'] | ||
| + | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac8 ''Activity (radioactivity), page 46, GCSE Physics; The Revision Guide, CGP, AQA'] | ||
| + | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Activity of radioisotope definition, page 112, GCSE Physics; Student Book, Collins, AQA'] | ||
| + | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Activity, pages 100-101, 109, GCSE Physics; Third Edition, Oxford University Press, AQA'] | ||
Revision as of 17:49, 27 October 2019
Contents
Key Stage 4
Meaning
Radioactivity is the emission of ionising radiation from a sample of unstable isotopes.
About Radioactivity
- The term radioactivity was first coined by Marie Curie who also discovered the elements Polonium and Radium which were radioactive.
- The radioactivity of a sample is measured in Becquerels (Bq) which is the number of radioactive decays in a sample per second.
- The radioactivity of a sample depends upon the amount of unstable isotopes in the sample and the half life of the isotope.
- Radioactivity is a scalar quantity as it has magnitude but does not have a direction.
Extra Information
References
AQA
- Activity (radioactivity), page 118, GCSE Combined Science Trilogy; Physics, CGP, AQA'
- Activity (radioactivity), page 130, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA'
- Activity (radioactivity), page 200, GCSE Combined Science; The Revision Guide, CGP, AQA'
- Activity (radioactivity), page 46, GCSE Physics; The Revision Guide, CGP, AQA'
- Activity of radioisotope definition, page 112, GCSE Physics; Student Book, Collins, AQA'
- Activity, pages 100-101, 109, GCSE Physics; Third Edition, Oxford University Press, AQA'