Question

Feigenbaum (“FYE-gun-bawm”) discovered universal constants describing systems that transition to this phenomenon via period doubling. A prototypical (15[1])system that displays this behavior evolves towards two overlapping loops in phase space, a strange attractor called its namesake's (-5[1])"butterfly.” (15[1])This phenomenon arises (15[1])due to deterministic (*) systems (10[1])being (10[1])strongly sensitive (10[1])to initial conditions. (10[1])This phenomenon is displayed (10[1])by the three-body problem and the double pendulum. For 10 points, name this highly unpredictable (10[1])physical phenomenon exemplified by the butterfly effect. ■END■

ANSWER: chaos [or chaotic or other word forms]
<Science - Physics>
= Average correct buzz position