Forced vibration produces resonance when
A. frequencies refract.
B. frequencies match.
C. waves reflect in unison.
D. speeds match.
Answer: B
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The crater at Crater Lake was formed by
A. the erosion of ash and cinders from a circular basin filled with pyroclastics. B. collapse of overlying rocks into an emptied magma chamber. C. an asteroid impact. D. formation of a large sinkhole over a collapsed limestone cavern system.
Which of the following is not a typical hazard posed to human-made structures by lava flows?
A) Burning B) High winds C) Crushing D) Burying
What visual evidence do scientists have to support the fact that Jupiter is the fastest-rotating planet in the solar system?
What will be an ideal response?
Which of the following pr°Cesses increases the environmental lapse rate?
A. cold advection at higher altitudes and daytime solar heating B. warm advection at higher altitudes and daytime radiational cooling C. daytime solar heating and surface radiational cooling D. cold advection at higher altitudes and surface radiational cooling