Lesson One: Notes

RADIATION NOTES I. ____________________ is produced by unstable atoms. A. Unstable atoms are ____________________________________________________ ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ B. Unstable atoms undergo a ___________________ process. The energy that is produced is called radiation. 1. Decay chain: Uranium-238 > ____________________________ > ______________________________ > Radon-218 > ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬____________________________ > ______________________________ 2. No one knows exactly how a particular atom will decay, but there is a known pattern describing _________________________________________________ ________________________________________________________________ called the ________________________________________________________ a. Formula used to calculate the amount of decay: A_E=A_o×〖0.5〗^(t/t_□(1/2) ) 1. A_E: __________________________________________ 2. A_o: __________________________________________ 3. t:____________________________________________ 4. t_(1/2): __________________________________________ b. If you originally had 157 grams of carbon-14 and the half-life of carbon-14 is 5730 years, how much would there be after 2000 years? II. Types of radiation A. Alpha radiation 1. Comprised of _____________________________, which have a charge of +2. 2. Slow, easily stopped by ___________________________________________, _________________________ hazard – can damage ______________________ _________________________________________________________________ B. Beta radiation 1. Comprised of _______________________________, which are ___________ _________________________________________________________________ and are ________________________________________ than alpha particles. 2. Can travel through _________________, making it an ___________________ and __________________________ hazard. 3. Can be blocked by _______________________________________________ C. Gamma radiation 1. Comprised of ______________________________, which are _____________ _____________________________________________________ . a. Part of the ________________________________________________. b. Travel at _________________________________________________, which is _____________________________. 2. Can be blocked by ________________________________________________ making it an _________________________ and __________________________ hazard. D. Alpha, beta, and gamma radiation are all forms of _____________________________ ________________, which is dangerous because ________________________________ ________________________________________________________________________ III. Exposure to radiation will have _________________________________________________ A. Large amounts of radiation can cause _______________________________________ ________________________________________________________________________ 1. Which are caused by the _________________ of atoms. 2. Creates a chain of events that can eventually affect the ___________________ Atoms > ________________ > ________________ > ________________ > Whole body