kneeboard

wake

Path left in water

• handlePart for gripping
• speedboatFast motorized watercraft
• towableCapable of being hauled

lifejacket · waterskiing · buoyancy · tricks · slalom · marina · dock · jetty · lake · river

clipboard

Rigid paper-holding surface

• checklistItemized verification guide
• cockpitPilot's control compartment
• pilotOne who steers aircraft

flight · navigation · straps · notepad · velcro · thigh · charts · logbook · hands-free

adrenaline

Emergency response hormone

• excitementState of eager enthusiasm
• rushQuick sudden movement
• speedRate of motion

exhilaration · action · fun · daring · stunt · extreme · adventure · heart-pounding · intense · joyride

surf

Waves near shore

• swellIncrease in size
• breakersWaves that collapse shoreward
• whitecapsFoam-topped breaking waves

foam · splash · barrel · curl · face · break · paddle · prone · bodyboard · shore

balance

Steadiness or amount owed

• stabilityResistance to displacement
• coordinationOrganized cooperative movement
• coreCentral essential portion

control · posture · centering · leverage · grounding · carving · edge · lean · cut · jump

• flight gearflight suit, flight suits, flight helmet, flight jacket, flight boots
• towed watersportswater skiing, waterskiing, wakeboarding, tubing, towable tube
• aviation gearcockpit, altimeter, autopilot, control stick, ejection seat
• pilot gearflight helmet, flight suit, flight bag, headset, logbook
• watercraftboat, sailboat, kayak, canoe, ships
• aviationaircraft, airports, flying, flight, airplane