Flashcards
Untitled
Cards in this deck (43)
- 1wavesa disturbance that transfers energy from one place to another without transferring matter
- 2mechanical wavesA wave that can travel only through matter
- 3meduima material in which a wave travels
- 4transverse waveA wave in which the disturbance is perpendicular to the direction the wave travels
- 5creststhe highest point on a transverse wave
- 6troughthe lowest point on a transverse wave
- 7longitudinal waveA wave that makes the particles in a medium move parallel to the direction the wave travels
- 8compressionsthe region of a longitudinal ave where the particles in a medium are CLOSEST TOGETHER.
- 9Rarefactionthe region of a longitudinal wave where the particles in a medium are FARTHEST APART
- 10vibrationA rapid , back-and-forth motion that can occur in solids, liquids or gases
- 11Electromagnetic waveA wave that can travel through empty space and through matter
- 12amplitudethe maximum distance that the wave moves from its rest position
- 13wave propertiesamplitude (A)
wavelength
frequency
period - 14frequencythe number of wavelengths that pass by a point each second
- 15wavelengththe distance from one point on a wave to the same point on the next wave
- 16what are the 3 ways of waves to interact with matter?absorption
transmission
reflection - 17absorptiontransfer of energy by a wave to the medium through which it travels
- 18transmissionthe passage of light through an object
- 19reflectionthe bouncing of a wave off a surface
- 20law of reflectionwhen a wave is reflected from a surface , the angle of reflection is equal to the angle of incidence
- 21refractionthe change in direction of a wave that occurs as the wave changes speed when moving from one medium to another
- 22diffractionthe change in direction of a wave when it travels by the edge of an object or through an opening
- 23interferenceoccurs when waves that overlap combine , forming a new wave
- 24sound waveslongitudinal waves that can travel only through matter
- 25how is the amplitude of sound related to energy ?as as the energy of a sound waves increases its amplitude increases
- 26intensitythe amount of sound energy that passes through a square meter of space in one second
- 27pitchthe perception of how high or low a sound seems
- 28Doppler effectthe change of a pitch when a sound source is moving in relation to an observer
- 29resonancean increase in amplitude that occurs when an object vibrating at its natural frequency absorbs energy from a nearby object vibrating at the same frequency
- 30echoa reflected sound wave
- 31reverberationthe collection of reflected sounds from the surfaces in a closed space
- 32acousticsthe study of how sound interacts with structures
- 33echocolocationthe process an animal uses to locate an object by means of reflected sounds
- 34sonara system that uses the reflection of sound waves to find underwater objects
- 35what are some ways in which people use ultra sound waves ?ultrasound can break large kidney stones into tiny pieces
- 36radiant energyenergy carried by an electromagnetic wave
- 37how do electromagnetic waves form?electromagnetic waves form when an electric charge accelerates by either speeding up , slowing down or changing direction.
- 38electromagnetic specturmthe entire range of electromagnetic wave with different frequencies and wavelength
- 39broadcastingthe use of electromagnetic waves to send information in all directions
- 40carrier wavean electromagnetic wave that a radio or television station use to carry its sound or image signals
- 41amplitude modulationa change in the amplitude of a carrier wave
- 42frequency modulationa change in the frequency of a carrier wave
- 43global positioning system (GPS)a worldwide navigate system that uses satellite signals to determine a receiver's location
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- Flashcards on Untitled, created by fofofo_fatima on 16/12/2014.
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