Round 4: Tossup 1

Description acceptable. The mechanism that causes the W and Z bosons to have this property is initiated by spontaneous symmetry breaking in a “Mexican hat” potential. (10[1])Neutrinos were shown to have (10[1])this property (10[2])by Super-Kamiokande’s (“KAH-mee-oh-KAHN-day’s”) discovery of neutrino (10[1])oscillation. Louis de Broglie (“duh BROY”) theorized that particles (-5[1])with this property have a nonzero wavelength. (-5[1])The Higgs field causes some particles to have this property. (10[2])Particles (10[1])with this property must have a nonzero rest energy and cannot travel at the (10[1])speed of light. Objects with this property cause four-dimensional spacetime to curve according to general (10[1])relativity. For 10 points, describe this property of objects measuring more than zero kilograms. ■END■ (10[2])

ANSWER: massive [accept descriptions of particles with positive rest mass; accept descriptions of particles with positive rest energy until “rest”; reject answers that just mention “energy”]
<UCLA B, Physics> | Packet D
= Average correct buzz position

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