physics - waves Flashcards
A wiggle in both space and time is a ___________________.
wave
A wiggle in time is a __________________.
vibration
The source of all waves is _______________________.
vibrations
Both a transverse wave and a longitudinal wave have ____________________.
transport energy without transporting matter
The frequency of a certain wave is 10 Hz and its period is _________________.
0.1 s
If you double the frequency of a vibrating object, its period _______________.
halves
All waves have in common a ________________________.
vibrating source
The compressions and rarefactions in a longitudinal wave travel in ______________________________.
the same direction as that of the wave.
Give examples of longitudinal waves.
sound waves, tsunamis, vibrations in springs
The vibrations of a transverse wave move in what direction?
right angles
The vibrations of a longitudinal wave move in what direction?
parallel to the direction of wave
Give examples of transverse waves.
radio, ocean waves, electromagnetic waves
What equation(s) are used for wave speed
speed = wavelength x frequency
what is the wave speed of a wave traveling an average distance of 6 meters in one second?
The wave speed would be 6 m/s
Interference is a property of what type of waves
Both transverse and longitudinal waves
A node is a position of
minimum displacement in a standing wave
The Doppler effect is a characteristic of what kinds of waves?
sound waves, light waves, water waves
A Doppler effect occurs when a source of sound moves in what direction?
When a source of sound moves towards and away from you (either)
A red shift for light indicates that the light source is moving in what direction?
moving away from the observer
A blue shift for light indicates that the light source is moving in what direction?
moving towards the observer
An aircraft that flies faster than the speed of sound is said to be ________________.
supersonic
A sonic boom is produced by an airplane flying at a speed _____________________________________.
greater than the speed of sound
The approximate range of human hearing is ____________________.
20 Hz to 20,000 kHz
A wave of frequency of 1000 Hertz vibrates at ________________.
1,000 cycles per second
Sound travels fastest in what types of material and slowest in what types of material?
Sound travels fastest in solids and slowest in gas
Sound waves can not travel in __________.
vacuum
The speed of sound depends on ________________.
the medium in which it travels
The speed of a sound wave in air depends on ________________.
the temperature of the air
Sound travels faster in air if the air temperature is ______.
warm
One reason for the higher pitch of your voice after you inhale helium is that sound travels _______________.
faster in helium than in air
know the different parts of a wave
