In Zorbing, or sphereing, you roll down a hill inside a plastic __
__ jumping with a parachute can be done from anything really tall
Street __ is similar to the winter sport, but on wheels
__ climbing involves ropes, a harness, and a bare mountain face
__-boarding is like waterskiing, but you're catching air on a board
Grab your double-ended paddle and cross a lake or the ocean
__ diving is more exploration than an extreme sport these days
This is a type of a personal watercraft
__-blading is like ice skating, but with wheels and no ice
Snowboarding has become nearly as popular as __ in recent years
Mixed __ arts combines boxing, wrestling, jiu-jitsu, and other styles
This was invented by the early Hawaiians
Mountain __ gets dangerous at high altitudes
Some ski lifts give a ride to __ bikers in the summer
BMX dirt bikes are used for racing and to perform __ stunts
This involves a lightweight motorcycle and piles of dirt
Jumping out of a perfectly good airplane
A type of rock climbing with shorter runs and no ropes
Trying to stand on a board after you've jumped from a plane
Also known as caving, or exploring caves
Like flying a kite, but there's no string, and you're attached
You can ascend a frozen waterfall when doing this
A parachute provides the lift, but a boat pulls you
A surfboard with your own sail
This winter mode of transportation can also be a lot of fun
Go to Pamplona, Spain and run __ __ __
Falling off a bridge with a rubber band tied to your feet
Be sure to wear a helmet and pads when doing this