Photo Credit: Mond [CC-BY-SA-3.0 or GFDL], via Wikimedia Commons
Read the article, Chernobyl’s Effects Linger On (http://news.bbc.co.uk/hi/english/sci/tech/newsid_743000/743879.stm) and answer these questions:
- When was this article published?
- Why will restrictions on some food continue in the United Kingdom and former Soviet Union for another 50 years?
- Where have high levels of radioactive cesium been measured?
- What happened to the levels of radioactive cesium during the first five years after the Chernobyl accident?
- Describe why levels of radioactive cesium are not decreasing anymore.
- Why is diffusion of radioactive cesium back into the environment occurring? Explain the physical principle behind this diffusion.
- How long will the United Kingdom have to continue restrictions on sheep from the Cumbria region as a food item for humans?
- How long will forest berries, fungi, and fish from parts of the former Soviet Union remain restricted?
Now read Chernobyl Children Show DNA Changes (http://news.bbc.co.uk/hi/english/sci/tech/newsid_1319000/1319386.stm) and answer these questions:
- Who are the children that this article is about? To whom were they born?
- What are “liquidators”?
- Why are scientists studying the children?
- What are the controls in this study?
- Describe what scientists discovered about the children’s DNA.
- Describe the factors that may be linked to the number of DNA changes observed in children.
Read Nuclear Energy Agency: Health Impact (http://www.nea.fr/html/rp/chernobyl/c05.html)
and answer these questions:
- Describe what happens to DNA, cells, and organs after low and high doses of radiation.
- Describe the acute health effects of the Chernobyl disaster.
- Describe the chronic or late health effects of the Chernobyl disaster.