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Radioactivity

To do this puzzle just find the word that matches the definition.

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    24                        
   
   
25                    

Across
1.used in x-ray flourence and bone density gauges
3.tumour-seaking agent
7.a person who receives a radiation dose for a long period of time
8.radiometric dating:millions to billions of years
9.studying genetic diseases and affects
10.isotope prepared in cyclotron
12.location of leaks in water pipes
15.domestic smoke alarms
16.a person who receives a radiation dose for a short period time
18.effects that occur on a random basis
21.isotope prepared in a nuclear reactor
22.seen in the individula who receives the agent
23.radiotracing to identify sources of soil erosion and depositing
24.used to predict the bhaviour of heavy metals
25.supplied as a wire
Down
2.effects that can be directly related to the dose
4.enriched as a fuel for most nuclear reactors
5.cancer treatment as at tumour cells tend to be more suspencible
6.argon radiometric dating:100000 to several billion years
11.measures the age of young groundwater
13.seen in the offspring of the agent
14.treatment for red blood cells
17.date layers of soil and sand deposited up to about 80 years ago
19.locating damaged heart muscle
20.liver cancer therapy

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