Flashcards in Year 9 Physics Deck (16):
A wave is a transmitter of energy without the movement of particles from place to place. The vibration of particles or energy fields is involved.
Define Transverse Waves...
wave involving the vibration of particles perpendicular to the direction of energy transfer
Define Compression Waves ...
wave involving the vibration of particles in the same direction as energy transfer
What is Longitudinal wave?
Another word for compression wave.
Define a Medium...
material through which a wave moves
repeated fast back-and-forth movements
Define Compression ...
region in which the particles are closer than when not disturbed by a wave
region in which the particles are further apart than when not disturbed by a wave
number of vibrations in one second, or the number of wavelengths passing in one second
highness or lowness of a sound. The pitch that you hear depends on the frequency of the vibrating air.
unit of frequency; its abbreviation is Hz. One hertz is equal to one vibration every second.
distance between two neighbouring crests or troughs of a wave. This is the distance between two particles vibrating in step.
maximum distance that a particle moves away from its undisturbed position
Define Sonar ( SOund Navigation and Ranging )...
use of reflected sound waves to locate objects under water (sound navigation and ranging)( SOund Navigation and Ranging )
use of sound to locate objects by detecting echoes