1. What is EM radiation? Explain some key differences between ionizing EM radiation and other forms of EM radiation, giving an example of each.

2. What are a two different ways that ionizing radiation can hurt people?

3. What is the linear hypothesis for radiation exposure? Is it used for anything practical? Is it proven?

4. Suppose you learn that a hospital X ray imaging machine is subjecting patients to 50% more radiation that it is supposed to do. Why or why not would this be cause for concern?

5. Suppose a patient needs a CAT scan to verify that there is no intracranial bleeding. What would you say about the dangers and on what basis?

6. All light-whether visible of invisible is ____ radiation. (Fill in the blank.) Name three forms of invisible light, saying in what important way they differ. What are some sources and uses of the forms you mention?

7. In what ways could non-ionizing radiation hurt people? (Please consider two different forms of non-ionizing radiation.)