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Waves Flashcards

(75 cards)

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1
Q

Waves move ____.

A

Energy

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2
Q

-a physical environment in which phenomena occur

A

Medium

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3
Q

Give three examples of a medium

A

Water, air, Earth

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4
Q

-a wave that requires a medium through which to travel

A

Mechanical Waves

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5
Q

Give two examples of mechanical waves

A

Sound waves

Earthquake waves

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6
Q

Do electromagnetic waves require a medium?

A

nope

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7
Q

-a wave that consists of oscillating electric and magnetic fields

A

Electromagnetic Waves

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8
Q

Give three examples of electromagnetic waves

A

Light, X-Rays, radio waves

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9
Q

What is the ability to exert force over a long distance or the ability to do work?

A

Energy

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10
Q

The bigger the wave the ____ it carries.

A

More energy

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11
Q

As waves spread out, successive _____ move farther from the center.

A

Wave fronts

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12
Q

Most waves are caused by _____.

A

Vibrating objects

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13
Q

What may be caused by vibrating charged particles?

A

Electromagnetic waves

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14
Q

What kind of waves can be caused by the vocal chords vibrating?

A

Sound waves

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15
Q

What vibrates in mechanical waves as the wave passes through?

A

The particles of the mediu

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16
Q

What transfers only energy not matter?

A

The wave front

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17
Q

-a vibration that fades out as energy is transferred from one object to another

A

Damped harmonic motion

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18
Q

Give an example of damped harmonic motion.

A

Shock absorbers

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19
Q

What kind of waves have perpendicular motion?

A

Transverse waves

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20
Q

The motion of the particles in the medium are ____ to the motion of the wave. (Like a mass on a spring.)

A

Perpendicular

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21
Q

Give an example of transverse waves.

A

Light waves

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22
Q

-cause particles in the medium to vibrate parallel to the motion of the wave

A

Longitudinal waves

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23
Q

Give an example of a longitudinal wave

A

Sound waves

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24
Q

-a disturbance that carries energy matter or space

A

Wave

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25
-the highest point of a transverse wave
Crest
26
-the lowest point of a transverse wave
Trough
27
-crowded area of a longitudinal wave
Compression
28
-the stretched-out areas of a longitudinal wave
Rarefraction
29
Look for drawn waves in notes-
Bc I can't draw by typing
30
-occur at the boundary between two mediums
Surface Waves
31
Give an example of surface waves
Water waves
32
How do particles move in surface waves?
In circles
33
-the maximum distance that the particles of a wave's medium vibrate from their rest position
Amplitude
34
-the distance from any point on a wave to an identical point on the next wave
Wavelength
35
____ and ____ are measures of distance.
Amplitude and wavelengths
36
___ and ___ tell you about energy.
Amplitude and wavelength
37
-the time it takes a complete cycle or wave oscillation to occur (T)
Period
38
-the number of cycles or vibrations per unit of time (f)
Frequency
39
-number of vibrations per second (Hz)
Hertz
40
Study your math.
Don't you dare ignore this like you usually do Anna! You will fail high school and end up working at McDonald's. Do you want that? No. So study!
41
Frequency
1/period =1/T
42
Wave speed =
Frequency x wavelength Or Speed = wavelength / period
43
V=
Lambda/T
44
Math skills on page 519
!!!!!!
45
Lambda stands for
Wavelength
46
What does the speed of a wave depend upon?
It's medium
47
Sound travels _ to _ times faster in water than in air.
3-4
48
Sound travels _-_ times faster in solids than in air.
15-20
49
-explains differences in wave speed
Kinetic theory
50
What determines how well waves travel through a medium?
The arrangement of the particles
51
What is the speed of light in an empty space?
3 x 10^8 m/s, (c)
52
When does light travel slower?
When it passes through a medium such as water or air
53
What comes in a wide range of frequencies and wavelengths?
Light
54
Visible light ranges between
4. 3 x 10^14 Hz | 7. 5 x 10^14 Hz
55
-the full range of light at different frequencies and wavelengths
Electromagnetic Spectrum
56
See figure 7 on page 521
look at the pretty light | bask in the glory of Roy G. Biv
57
What creates a change in observed frequency?
Motion between the source of waves and the observer
58
-determined by the frequency at which the sound waves strike the eardrum
Pitch
59
A car moving toward you blowing its horn
High pitch
60
As the car moves away, the horn has a
Lower pitch
61
The Doppler Effect occurs in _____ and ______ as well.
Light and other types of waves
62
-the bounding back of a wave when it hits a surface or boundary that it does not go through
Reflection
63
Give an example of reflection.
Light is reflected by a shiny mirror
64
-a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening
Diffraction
65
Give an example of diffraction.
Sound waves bend around a corner to enable you to hear sounds from another location.
66
-the bending of a wavefront as the wavefront passes between two substances in which the speed of the wave differs
Refraction
67
-the combination of two or more waves of the same frequency that results in a single wave
Interference
68
-any interference in which waves combine so that the resulting wave is bigger than the original waves
Constructive interference
69
-any interference in which waves combine so that the resulting wave is smaller than the largest of the original wave
Destructive interference
70
-a wave or vibration that causes the particles in the medium to vibrate in a stationary pattern
Standing Wave
71
Give an example of a standing wave.
A wave reflected back on itself.
72
Although it appears the wave is standing still, in reality waves are ____.
Traveling in both directions
73
Standing waves have_____ and _____.
Nodes and antinodes
74
-points of vibration
Nodes
75
-points of max vibration.
Antinodes

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