1
The activity of riding on a raft over rough, dangerous parts of a fast-flowing river
2
Is the motorcycle sport of racing motorcycles
3
The sport or activity of riding a mountain bike
4
The activity of climbing cliffs or large rocks, as a hobby or sport
5
The sport in which you sail across water by standing on a board and holding onto a large sail
6
The sport of skiing downhill in a straight line at as high a speed as possible, as timed over a fixed stretch of ski slope
7
The sport of jumping out of an aircraft with a special parachute that allows you to travel a long horizontal distance before you land
8
The sport of descending a steep road or track on a large type of skateboard on which riders lie on their backs, descending feet first
9
The sport or activity of diving without the aid of breathing apparatus
