Note: there are no \"cookbook\" answers to the following questions. You have to

Question

Note: there are no "cookbook" answers to the following questions. You have to think about things.

(5 points) You are a brown trout living in a high alpine lake in Colorado. You have a cousin (a rainbow) living in a farm pond next to the Department of Energy's Hanford Site. Describe why your annual radiation doses might differ.

(5 points) Describe why they might be the same.

(5 points) A human baby and an adult both drink milk containing 131I; both drink 1 L d-1. Which would you expect to have the higher concentration of 131I in their thyroid? Why?

(5 points) 3H is detectable in the environment. Where did it come from?

(15 points) An elephant and an amoeba both went for a swim in a pond contaminated with 137 Neither of them drank the water. Which would you expect to have the highest concentration of the contaminant? Why?

(15 points) A mule deer is consuming vegetation from a contaminated pasture. The vegetation has an average activity concentration of 1 Bq g-1 of 137 Assuming the deer eats 1.5 kg d-1 and that the effective half-time for 137Cs in the deer is 500 days.   What equation would you use to calculate the activity in the "deer" compartment with time? Generate a plot (using excel or by hand) and submit it with your a

Explanation / Answer

The last three questions are incomplete.

Any fish who is exposed to ionizing radiation as a direct and necessary condition of his occupation, business or employment is said to be "occupationally exposed" and is subject to the dose limits for this group set out. so annual doses will differ for both of the fishes.1 mSv (100 mrem) per annum, i.e. one-hundredth of the maximum limit for Nuclear Energy Workers is the legal dose limit,but it wont be same as we cant be sure that it has been exposed always. so it might be same for both.

adult will have higher concetration of 131I ,as the degradation rate is higher in baby

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