Unit+2+Project

~How do radioactive atoms decay? Compare each of the methods. ~What is the relationship between half-life and mass? ~How does radiometric dating work? ~Compare and contrast biological half-life, physical half-life, and effective half-life. ~Describe the common time frames for half-life, and find the half-lives of five common elements.
 * __Option 1: Investigating Half-Life__**

Write a summary detailing all of your findings and calculations. Show all work and any equations you used.


 * __Option 2: Credit Cards__**

Visit a Web site that gives comparisons between credit cards. Choose five of these credit cards. What is the range of rates currently being offered? Which card do you consider to be the best choice? After determining which card is your best choice, answer the following question:

Suppose you make a purchase of $750 and charge it to your credit card. If you put no other purchases on the card and only make payments of $50 each month, how long will it take you to pay off the purchase? How much interest will you pay on your purchase?

Write a summary detailing all of your findings and calculations. Show all work and any equations you used. Comparisons between credit cards can be found at www.credit-card-applications-center.com or [], the National Foundation for Credit Counseling.


 * __Option 3: Pharmacy__**

Consult a pharmacist (or surf the Web or read the fine print on the information sheet enclosed with many medicines) to find the half-lives of five common drugs (Tylenol, Advil, etc.). Create an equation and a word problem for the metabolism of one of the common drugs, and solve the problem. Write a summary detailing all of your findings and calculations. Show all work and any equations you used.

__**Option 4: Savings Accounts**__

Find a Web site that compares interest rates available for ordinary savings accounts at different banks, or visit local or national banks to obtain rates (which change daily). Choose five of these banks. What is the range of rates currently being offered? What is the best deal? After determining the best deal, answer the following question:

Suppose you deposited $1000 in the account you selected. If the rate remained unchanged for the next 5 years and you made no further deposits, how much money would you have in the account?

Write a summary detailing all of your findings and calculations. Show all work and any equations you used.