This is a closed-book, closed-note quiz. 4. What kind of rock is composed of fine, consolidated For Questions I though 7, select from the following ansediments? (Hint: It is sometimes called mudstone.) swers: A. actinides B. activation 5. Which process converts or incorporates wastes into C. bentonite glass for permanent disposal? D. calcination E. clayrock F. defense in depth G. depleted H. enriched I. fertile J. fissile K. granite 7. Which term implies the use of multiple barriers to L. hex contain waste? M. high-level N. igneous O. leaching P. mixed low-level Q. recycled R. reprocessing S. salt T. sedimentary U. Synroc V. transuranic W. tuff X. vitrification 9. Which class of LLW contains radionuclides that are 1. What is the adjective for elements heavier than uraexpected to decay to safe levels within 100 years? nium? 2. What kind of rock is formed in nature by the solidifi- 10. Which class(es) of LLW may be buried in shallow cation of molten or partly molten material? land repositories? 3. What kind of rock is formed from consolidated volcanic ash? 11. Which class(es) of LLW must be buried in deep geological repositories