2. sand: ______ cm to 0.2 cm

3. pebbles: ______cm to ______ cm

4. cobbles: ______ cm to ______ cm

5. boulders: above ________ cm

6. clay: below _______ cm

7. The graph on the upper right also shows how fast (velocity) a stream must flow to carry certain size particles. For example, for a stream to carry the smallest pebbles, the stream velocity must be 50 cm/s.

8. The minimum velocity a stream would need to carry the smallest cobble is:

9. _____________________________

10. The minimum velocity necessary to carry the smallest boulder is: _____________________________

11. The chart on the top of page 7 is the scheme used to identify sedimentary rocks lithified (rock created) from specific particles. For example, clay becomes shale. Use the chart to identify the sedimentary rocks the following sediments will create.

12. silt becomes _____________

13. sand becomes ____________

14. rounded pebbles, cobbles, and boulders become ______________

15. angular pebbles, cobbles, and boulders become _______________