Ch. 30 Nuclear Physics and Radioactivity and

Ch. 31 Nuclear Energy: Effects and Uses of Radiation

Due TBA

Answer sheet

1. An isotope has a half-life of one month.  After two months, will a given sample of this isotope have completely decayed?  If not, how  much remains?

2. Why are neutrons released in a fission reaction?

3.  Light energy from the Sun comes from fusion.  What conditions inside the Sun make fusion possible?    How is the plasma contained in the Sun?

4. Do you have any questions about something you read in this chapter? Is there anything that didn’t make sense? Is there any topic that you want me to emphasize or something you want me to skip because you are pretty sure you’ve got it? Any comments in general about the course, the chapter or the state of the universe?