Physics 3 Flashcards
What are transverse waves
motion in which all points on a wave oscillate along paths at right angles to the direction of the wave’s advance
What are longitudinal waves
A wave that moves in the same direction as the direction in which the particles are vibrating., the vibrations are parallel to the direction of wave travel. Examples of longitudinal waves include: sound waves.
Trough
Lowest point in wave
What is frequency
the inverse of period.The number of crests or troughs that pass a point during a set time interval.
How to calculate wave speed
Speed(m/s)=Frequency(Hz)×Wavelength(m)
Wavelength is
Distance between two identical points
Amplitude is
the maximum displacement of points on a wave
Sound waves are
the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water or any other liquid or solid matter) as it propagates away from the source of the sound
What is the speed of sound
343 m/s
How does the human ear perceive sound waves
The structures of the cochlea vibrate in response to sound with a particular vibratory pattern
How does light travel
Light only travels in straight lines (unless its reflected)
What is light transmission
the amount of light that can successfully pass through glass and other types of materials
Reflection definition
the throwing back by a body or surface of light, heat, or sound without absorbing it.
What is refraction
the change in direction of a wave passing from one medium to another caused by its change in speed
What are lenses
a transmissive optical device that focuses or disperses light beams using refraction
