This set covers A Beka Book Physics Chapter 16: "Waves" (pages 236-251).

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  • transverse waves

    term for waves that travel along a rope

    perpendicular

    In a transverse waves, the displacement and wave motion are ______ to each other.

    wave pulse

    term for a moving disturbance caused by jerking one end of a rope up slightly and then down again

    wave

    term for two opposite pulses in succession

    wave train

    term for a series of waves

    crest

    term for the highest point of displacement of a wave

    equilibrium

    term for the position of no net change

    elastic medium

    term for any medium that, when distorted, tends to recover its orginal arrangement of particles

    elastic

    In general, a wave can travel through any ____ medium.

    energy

    In general, a wave pulse or wave transports ____ rather than matter.

    simple harmonic motion

    term for oscillation due to a restorative force that is proportional to the displacement from a central, or equilibrium, position

    trough

    term for the lowest point of displacement of a wave

    sinusoidal

    The waveform generated by a harmonic oscillator is _____; that is, it is identical in form to the graph of the equation y = sin θ

    period

    term for a wave train in which the same wave form appears at regular intervals along the path of the train

    frequency

    term for the number of waves that pass a given point per unit time in any periodic wave train

    period

    term for the time required for a single wave to pass a given point

    speed

    term for a wave train's linear advance per unit time

    crest

    term for a peak of a wave

    wavelength

    term for the distance from one crest to the next, or from one trough to the next, or from any point on a wave to the corresponding point on the next wave

    one-dimensional wave

    term for a wave that follows a straight line, such as one that moves along a rope

    interface

    term for the boundary between water and air to which a wave is confined

    two-dimensional wave

    term for a wave that widens but does not deepen

    three-dimensional wave

    term for a wave that travels outward in all directions away from the source

    a water wave

    example of a two-dimensional wave

    sound

    example of a three-dimensional wave

    circular wave

    term for the type of wave that is created when a stone is dropped into a still pond

    wavefront

    term for a circle drawn through all points having the same displacement in the same circular wave

    ray

    term for an arrow indicating the direction of wave motion

    straight wave

    term for a wave with a circular wavefront that has very little curvature

    spherical wave

    term for a wave that travels three-dimensionally outward from a source

    plane wave

    term for a wave with a spherical wavefront that has very little curvature

    compression pulse

    term for a pulse that travels in the direction of compression

    rarefaction pulse

    term for a pulse that travels in the direction that a spring is stretched

    medium

    term for particles that carry energy

    normal

    term for the line perpendicular to a surface

    angle of incidence

    term for the angle between the incoming direction of a wave and the normal of the barrier

    reflection

    term for the turning back of wave motion at an interface between media

    law of reflection

    law that says that the angle of incidence and the angle of reflection are equal

    echo

    term for a sound that is heard later than sound directly from the source

    sonar

    term for the use of sound waves to judge distances under water or to locate submerged objects

    refraction

    term for the change in direction after two- or three-dimensional waves pass obliquely in to a region where they either speed up or slow down

    diffraction

    term for the spreading out of a wave after it passes through a narrow opening

    principle of superposition

    the principle that states that when two or more waves are traveling simultaneously through the same point in a medium, the displacement of any particle at that point is the algebraic sum of the displacements that would be caused by the waves separately

    composite wave train

    term for the wave train produced by superposition of different wave trains

    constructive interference

    term for greater displacement as a result of superposition

    destructive interference

    term for smaller displacement as a result of superposition

    complete

    If the net displacement of a particle under the competing influence of two or more pulses is zero, the effect is called _____ destructive interference.

    node

    term for any point where the medium remains undisturbed because of wave interference

    antinode

    term for any point where the medium moves with the combined energy of two wave trains

    loop

    term for the portion of a wave between any two consecutive nodes

    envelope of oscillation

    term for the outline of maximum displacement

    standing wave train

    term for the oscillation of a wave with nodes and antinodes caused by wave reflection

    standing wave

    term for the motion of a single loop

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