1. Ba ckgro und Ra diat ion

2. What is Back Ground Radiation?

5. These Natural Sources Are

11. How Do Rocks Contain Radioactivity

15. What Is Radon?

17. It comes from an extremely small amount of uranium that is naturally found in all rocks + soil

18. What is Radon Detector?

19. A radon detector is a machine used to detect the presence of radon gas.

20. Facts about Background Radiation

23. 2. Is Radon bad in our Lungs

25. This produces radioactivity in our lungs

26. 3 . Is career conected to background Radiation?

27. There is lots of career connected to B.R. for example; there is lots of physics and science for example

31. Background Radiation The End