Chapter 20, Problem 11STP

To determine

The processes in United states that contributes the most to the background radiation to be identified.

Answer to Problem 11STP

Most of the natural background radiations are exposure from air, some of cosmic rays, and from earth itself. The cosmic radiations, Terrestrial radiations and internal radiation are the sources of natural background radiations.

Explanation of Solution

Each year about 620 million radiationsare received by Americans.Source of received dose is natural background radiation. The cosmic radiations, terrestrial radiations and internal radiation are the emits of natural background radiations.

Conclusion:

Sources of natural background ground radiation:

1. Cosmic radiation
2. Terrestrial radiation
3. Internal radiation