In general, sound travels faster through


Solids than through gases


Gases than through solids


Empty space than through matter


Gases than through liquids


How has light been described?

as only a particle


as neither a wave nor a particle


as both a wave and a particle


as only a wave


What is amplitude?


Amplitude is the number of complete waves that pass a point in a second.


Amplitude is the height of a wave.


Amplitude is the distance between two crests or two troughs.


Amplitude is the time it takes for one complete wave to pass a given point.