Guide School - River Hazards This form is used to gauge the student's basic understanding of river hazards for commercial rafting trips. Name* First Last Email* 1) Describe the differences between Sieve and an Undercut rock. Also, describe one thing they both have in common.*Hint: the one thing in common was discussed with River Features; when recognized, it will help you avoid both types of rocks. No _ _ _ _ _ _.2) Describe 3 characteristics of a friendly rock, and 3 characteristics of an unfriendly rock.*3) A "strainer" is usually a tree that is in or across the river, at or below water level. A "sweeper" is similar, however, it usually hangs from above. Both collect solids while letting water pass through and are equally dangerous. What river running maneuver(s) would you use to avoid a strainer or sweeper?*4) Name 4 man-made hazards you may find on the Racecourse and why they could be problematic.*5) Would you find an eddy behind a strainer?*YesNo6) Would this be a good eddy to catch or not? Justify your answer.*6) Justify your answer.*7) Do you have any questions on basic river hazards that the instructor(s) can address tomorrow?*CommentsThis field is for validation purposes and should be left unchanged.