[ 2 1 s t c e n t u r y s k i l l s l i b r a r y ]
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INDEX
GLOSSARY
butterfly (BUHT-ur-flye)
a difficult
swimming stroke where both arms arch
above the water, and the swimmer does a
dolphin kick
conventional (kuhn-VEN-shuh-nuhl)
common or traditional
drag (DRAG)
a force which slows down the
movement of an object
efficient (i-FISH-uhnt)
working very well
and not wasting time or energy
energy (EN-ur-jee)
the ability of something
to do work
momentum (moh-MEN-tuhm)
the
property that a moving object has because
of its mass and its motion
rotation (roh-TAY-shun)
twist, turn
somersault (SUHM-ur-sawlt)
a movement
made forward or backward in which the body
rolls end over end in a complete turn
streamlined (STREEM-lined)
designed
or shaped to minimize resistance to water
or air
velocity (vuh-LAH-si-tee)
rate of speed in
a particular direction
breakout, 18–23, 25
breathing, 15–16, 23
dolphin kick, 21–22
drag, 17, 21
energy, 15–17, 21
flip turn, 27
how to do it, 10–13, 14–17
inventor of, 4–9
Kiefer, Adolph, 9
momentum, 16, 17
Olympics, 7, 9, 24
Phelps, Michael, 24–27
push-off, 18–19
Robertson, Julian “Tex,” 7, 9
rotation, 19–20, 22
Schwartz, Dorothy “Dottie,” 5
somersault, 4, 17, 23
speeding up, 14–17
streamlining, 6, 22, 26, 27
VandeWeghe, Al, 6, 7
velocity, 15–17, 18–19
