4 Radioactive Elements
... thought it was a great idea, too. They tried everything they
could think of. Of course, nothing worked. There is no chemical reaction that converts one element into another. Even so,
elements do sometimes change into other elements. A uranium atom can become a thorium atom. Atoms of carbon can
Teacher Materials - Scope, Sequence, and Coordination
... types of items are included. Some have been tested and reviewed, but not all.
1. Multiple choice questions accompanied by short essays, called justification, that allow teachers to
find out if students really understand their selections on the multiple choice.
2. Open-ended questions asking for essa ...
Waves notes section 5 - Nuclear radiation
... Disadvantages of using nuclear power to produce electricity
• A serious accident in a nuclear power station is a major disaster.
British nuclear reactors cannot blow up like a nuclear bomb but
even a conventional explosion can possibly release tonnes of
radioactive materials into the atmosphere. (Th ...
Topic 6 – Benefits and drawbacks of using radioactive materials
... The risk of harm decreases with distance from the sourceradioactive substances
are always handled with tongs, and kept away from other people
Protective clothing is worn in case the radioactive source happens to come into
contact with the skin
The most penetrating radiation (gamma rays) can be stop ...
Grade 10S Physics T3W5 material
... 5‐ By measuring in the rocks the present rate of radioactivity or the concentration of the non radioactive products
of radioactivity, the age of the rock can be determined.
6‐ a. Lower doses may cause Leukemia within 2years or other forms of cancer 15 to 20 years.
b. Radiation can cause genetic a ...
Nuclear Fission vs. Nuclear Fusion
... 10. A potential power source but we lack the technology to maintain the reactions so we are
unable to perform these reactions on Earth. ________________
11. The one with a “u” in it._________________
12. The one with two “i’s” in it. ___________________
13. The one that sounds like “fuse” __________ ...
Nuclear Hazards - SNS Courseware
... isotopes have to be totally stopped;
• Safety measures should be enforced strictly;
• Waste disposal must be careful, efficient and effective;
• There should be regular monitoring and quantitative analysis
through frequent sampling in the risk areas;
• Preventive measures should be followed so that ...
A dirty bomb or radiological dispersal device (RDD) is a speculative radiological weapon that combines radioactive material with conventional explosives. The purpose of the weapon is to contaminate the area around the dispersal agent/conventional explosion with radioactive material, serving primarily as an area denial device against civilians. It is however not to be confused with a nuclear explosion, such as a fission bomb, which by releasing nuclear energy produces blast effects far in excess of what is achievable by the use of conventional explosives.Though a radiological dispersal device (RDD) would be designed to disperse radioactive material over a large area, a bomb that uses conventional explosives and produces a blast wave would be far more lethal to people than the hazard posed by radioactive material that may be mixed with the explosive. At levels created from probable sources, not enough radiation would be present to cause severe illness or death. A test explosion and subsequent calculations done by the United States Department of Energy found that assuming nothing is done to clean up the affected area and everyone stays in the affected area for one year, the radiation exposure would be ""fairly high"", but not fatal. Recent analysis of the nuclear fallout from the Chernobyl disaster confirms this, showing that the effect on many people in the surrounding area, although not those in close proximity, was almost negligible.Since a dirty bomb is unlikely to cause many deaths by radiation exposure, many do not consider this to be a weapon of mass destruction. Its purpose would presumably be to create psychological, not physical, harm through ignorance, mass panic, and terror. For this reason dirty bombs are sometimes called ""weapons of mass disruption"". Additionally, containment and decontamination of thousands of victims, as well as decontamination of the affected area might require considerable time and expense, rendering areas partly unusable and causing economic damage.