_____ is when an object or wave bounces back from a surface it cannot go through.

when a wave enters a new medium at an angle, one side moves slower causing the wave to bend

When 2 waves meet crest to crest or trough to trough - amplitude increases

when a wave goes around a barrier or through narrow opening, IT BENDS AND SPREADS OUT

when 2 waves meet CREST to TROUGH, Amplitude decreases

an increase in amplitude that occurs when external vibrations MATCH an object's natural frequency

a wave that appears to stand still, but is really 2 waves interfering as they pass through each other

A wave with crest of 18 meters meets a wave with a trough of 6 meters, at the point where they meet what will remain?

2 waves meet in constructive interference. The first wave has an amplitude of 1.5 meters. The second has an amplitude of 4.5 meters. What will be the amplitude where they meet?

In the 1985 earthquake in Mexico City, what caused buildings 8 to 18 stories high, to crumble?

In a reflected wave, if the angle of incidence is 45 degrees, what is the angle of reflection?

In a standing wave, what is the name of the points at 0 amplitude?

In a standing wave, what are the points at maximum amplitude?

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