Electromagnetic Energy Flashcards

(31 cards)

1
Q

Disturbance that travels through space and time

A

Wave

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2
Q

Transfer enegy from one place to another

A

Wave motion

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3
Q

Continuing of an electric field developing magnetic field

A

Electromagnetic waves

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4
Q

Continuous group of waves

A

Wave train

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5
Q

Describes a smooth repetitive oscillation

A

Sine wave / sinusoid

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6
Q

Distance from one crest to another

A

Wavelength

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7
Q

Half the height from the peak of a crest to the lowest point of the wave

A

Amplitude

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8
Q

Product of frequency and wavelength

A

Velocity

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9
Q

Unit for velocity

A

Meter per second (m/s)

Miles per sec

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10
Q

Speed of light ( electromagnetic wave travels )

A

3x10^ 8 m/s

186 000 mi/s

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11
Q

Number of oscillationd per unit time

A

Frequency

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12
Q

Frequency is identified as

A

Cycles per second

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13
Q

Frequency is represented by

A

Nu (v)

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14
Q

Unit of measurement for frequency

A

Hertz

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15
Q

Wavelength is represented by

A

Lambda (A)

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16
Q

Unit of measurement in wavelength

A

Angstrom (A)

Nanometer (nm)

17
Q

1 A

18
Q

1 nm

19
Q

1nm

20
Q

Frequency and wavelength are

A

Inversely proportional

21
Q

Frequency and energy of photon are

22
Q

All energy is transmitted and absorbed in discrete particles called photons

A

Quantum theory

23
Q

Energy disturbances moving through space

24
Q

Interaction among energy, force or mass

25
Energy of thephoton varies with
Frequency
26
Energy =
Planck's constant (h) x frequency
27
Planck's constant
6. 626 x 10^-34 joules-second | 4. 135 x 10^-15 electron volt-sec
28
1 joule
6.24 x 10^18 eV
29
1 ev
1.6 x 10^-19 J
30
1 erg
1 x10^7 J
31
1 erg (2)
6.24 x 10^11 eV