This chapter discusses that light sometimes acts like a photon. What is a photon?

a. a charged particle in the nucleus of every atom
b. a kind of magnetic substance found in reflective minerals
c. a self-contained "packet" of electro-magnetic energy
d. a kind of sound that is too high frequency for the human ear to hear
d. you can’t fool me. Einstein showed that photons were a mistake – they don’t exist.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Where do magnetic lines of force enter earth?

Which lists correctly orders nuclear reactions from most radioactive waste generated to least waste generated within a given period of time? o a. radioactive decay, nuclear fission, nuclear fusion o b. radioactive decay, nuclear fusion, nuclear fission o c. nuclear fusion, nuclear fission, radioactive decay o d. nuclear fission, nuclear fusion, radioactive decay