Wave Properties
V shaped waves produced by an object moving faster than the speed of the waves.
What is a Bow Wave?
The inverse of period.
What is frequency?
Produced by the vibration of material objects.
acoustic wave
The type of wave in an earthquake you feel first.
What is the P wave?
The way in which interference patters are produced.
Interference patterns are caused by the collision of waves of the same (or very similar) frequencies
The equation for wave speed.
What is v=fλ?
The distance in meters from the crest of one wave to the crest of another.
What is "wavelength"
Increase in measured frequency from an approaching source.
Doppler shift
The type of instrument that measure earthquakes.
What is a seismograph (or seisometer)?
The medium particles move back & forth (oscillated) perpendicular to direction of wave.
the particles are displaced perpendicular to the direction the wave travels
Waves travel at a speed of 4 m/s at a frequency of 2 Hz. Therefore the wavelength must be_________.
What is 2 meters?
A wave where the disturbance moves perpendicular to the wave
What is "Transverse"
Decrease in measured frequency from a star that is moving away from you.
The Red shift
The place where earthquakes occur beneath the ground.
What is the focus or epifocus?
Electromagnetic Waves with the greatest frequency.
Gamma rays
Waves travel at a frequency of 4.0 Hz. Therefore, their period must be________
0.25
A point on a wave is the maximum value of upward displacement within a cycle
What is "crest"
The actual speed of sound at normal room Temperture of 20 degrees C.
What is 340 m/s?
EARTHQUAKES OCCUR IN BREAKS IN THE CRUST CALLED THIS.
What are faults?
The period of a wave with a frequency of 50 HZ.
0.02 s
The Sears building sways back and forth every 10 seconds. Therefore thefrequency of its vibrations is _____.
0.10 Hz.
Electromagnetic waves with the highest frequency and shortest wavelengths.
What are "Gamma rays"
Cone shaped wave produced from object moving at speed faster than the speed of sound (supersonic speeds) .
What is a Shock wave
The names of the tectonic plates the Califronia is located.
What are the Pacific and North American Plates?