| A | B |
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| vibration | An oscillation, a repeating, back-and-forth motion, about an equilibrium position |
| wave | "A wiggle in space and time"; a disturbance that repeats regularly in space and time and that is transmitted progressively from one place in a medium to the next with no actual transport of matter |
| Q-period | The time of a back-and-forth swing |
| simple harmonic motion | Periodic motion in which acceleration is proportional to the distance from an equililbrium position and is directed toward that equilibrium position |
| Q- What is a sine curve? | the special curve folowed by a pendulum |
| crest | One of the places in a wave where the wave is highest or the disturbance is greates |
| troughs | One of the places in a wave where the wave is lowest or the disturbance is greates in the opposite direction from a crest |
| amplitude | The distance from the midpoint to the maximum(crest) of a wave or equivalently, from the midpoing to the minimum |
| wavelength | The distance from the top of the crest of a wave to the top of the following crest, or equivalently, the distance between successive identical parts of the wave |
| Q- What is a frequency | The number of vibration in a given amount of time. |
| hertz | The SI unit of frequency. One hertz is one vibration per second |
| Q-longitudinal wave | When the motion of the medium is at a right angle to the direction of motion. |
| interference pattern | A pattern formed by the overlapping of two or more waves that arrive in a region at the same time |
| constructive interference | Addition of two or more waves when wave crests overlap to produce a resulting wave of increased amplitude |
| destructive interference | Combination of waves where crest parts of one wave overlap trough parts of another, resulting in a wave of decreased amplitude |
| out of phase | Term applied to two waves for which the crest of one wave arrives at a point at the same time that a trough of the second wave arrives |
| in phase | Term applied to two or more waves whose crests(and troughs) arrive at a place at the same time, so that their effects reinforce each other |
| standing wave | Wave in which parts of the wave remain stationary and the wave appears not to be traveling. The result of interference between an incident (original) wave and a reflected wave |
| antinodes | The positions on a standing wave where the largest amplitudes occur |
| doppler effect | The change in frequency of a wave due to the motion of the source or of the receiver |
| blue shift | An increase in the measured frequency of light from an approaching source |
| red shift | A decrease in the measured frequency of light(or other radiation) from a receding source |
| bow wave | The V-shaped wave produced by an object moving on a liquid surface faster than the wave speed |
| shock wave | A cone-shaped wave produced by an object moving at supersonic speed through a fluid |
| sonic boom | The sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listener |
| node | A point on a wave where there is no motion. |
| transverse wave | When the motion of the medium is at a right angle to the direction of motion |
| What two factors affect the period of a pendulum? | Length and Gravity |
| How does mass influence the period? | It does not |
| Name the four major parts of a wave. | Crest Through Amplitude Wavelength |
| 800kHz will equal how many vibrations per second? | 800,000Hz |
| Z 110 Hz on the FM dial will equal how many vibrations per second? | 110,000,000Hz |
| if you play 4 inninngs of baseball in an hour then the frequency and period is? | .25 and 4 |
| Calculate the speed of waves in water that are .5 m apart and have a frequency of 2Hz? | v=F x X = v = (2Hz) (.5m)= .10 m/s |
| A doctor counts 60 heartbeats in one minute. What is the period and frequency | 25 Hz |
| The unit for measuring Frequency is called | Pressure |
| Transerverse, Longitudinal, and Standing are types of what | Waves |
| What is found in all types of waves | The Dopppler Effect |
| Most of the passenger airliners are what | Supersoinic |
| Most matter will not | wiggle and jiggle |
| The length of the pendulum and the acceleration of gravity will | set the period of the pendulum |
| A source of nearly all wave motion is a | Perpetual motion |
| The number of cycles in a given time is called? | wavelength |
| A wiggle in time and space is a | period |
| Both light and sound are energy that travel through space as a | small particles |
| The time of a back and forth swing is a | meter |
| What is the influence of mass on the period of a pendulum | short period |
| The distance between successive identical parts of a wave is called its | Amplitude |
| A wave created by shaking a rope up and down is called a | Standing wave |
| When the crest of one wave overlaps the crest of another, it results in an increased amplitude, this is called | sub wave |
| In a standing wave certain parts of the wave remain stationary, this is called a | sonic boom |
| The change in frequency due to the motion of the source is called | Sonic boom |
| Which of the following is not transverse wave | light |
| Whenever the motion of the medium is at right angle to the direction in which a wave travels is called a | Longitudinal wave |
| Radar, radio, light, x-rays, microwaves are all travel as what type of wave? | short |
| When particles move along in the direction of the wave travels in, this is an example of a | amplifying wave |
| Whenever the crest of two waves overlap, the amplitude is increased, what type of interfence is these? | Destructive |
