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FUN 1 EO: 1.13

1 / 10

Where are the greatest concentrations of indoor radon typically found?

2 / 10

Which isotope is responsible for most of our internal exposure to radiation?

3 / 10

Which of the following elements is not listed as a natural radioactive element contributing to terrestrial radiation?

4 / 10

Cosmic radiation comes primarily from which two sources?

5 / 10

Which of the following is NOT one of the four major sources of naturally occurring radiation exposures?

6 / 10

What is the average annual total effective dose to the general population from naturally occurring and manmade sources?

7 / 10

Many areas have elevated levels of terrestrial radiation due to increased concentrations of what elements in the soil?

8 / 10

What increases the cosmic radiation dose at higher elevations?

9 / 10

At sea level, what is the average annual cosmic radiation dose?

10 / 10

What is the type of radiation emitted by radon?

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