Answers to survey questions based on USGS web site

Web Source Evaluation for http://pubs.usgs.gov/gip/geotime/contents.html

1. Name of Web site:
2. Primary use:       educational commercial other
3. What organization or individual created this site?
4. Does this person or organization have valid credentials to present this information? Explain your answer.
5. Is the information on the Web site current?
6. What two scales are used to measure geological time? Briefly describe each one.
7. What are some of the factors that challenge the precision of measuring geological time?
8. How old is the Earth?
9. Explain the benefits of the study of geology.  
10. How will the study of geology benefit you personally?