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Vocab > Unit 5 Lesson 1 : waves and light > Flashcards

Unit 5 Lesson 1 : waves and light Flashcards

0
Q

Medium

A

The material through which a wave travels.

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1
Q

Wave

A

A disturbance that transfers energy from one place to another.

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2
Q

Longitudinal wave

A

In a longitudinal wave particles move back and forth in the same direction that the wave travels, or parallel to the wave.

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3
Q

Transverse wave

A

In a transverse wave, particles move perpendicularly to the direction the wave travels.

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4
Q

Mechanical wave

A

Waves that require a medium.

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5
Q

Electromagnetic waves

A

Are disturbances in electric and magnetic fields.

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6
Q

Amplitude

A

A measure of how far particles in the medium move away from their normal rest position.

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7
Q

Wavelength

A

Is the distance over which the waves shape repeats.

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8
Q

Wave period

A

Is the time required for one cycle.

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9
Q

Frequency

A

Tells you how many cycles occur in an amount of time, most commonly 1 s.

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10
Q

Hertz

A

One hertz is equal to one cycle per second.

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11
Q

Wavefronts

A

The peaks can be drawn as shapes, such as circles or spheres, called wavefronts.

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12
Q

Wave speed

A

The speed at which a wave travels.

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13
Q

Radiation

A

Is the transfer of energy as EM waves.

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14
Q

Electromagnetic (EM) spectrum

A

However, visible light represents only a very small frequency (or wavelengths) that an EM wave can have.

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15
Q

Infrared or IR

A

Infrared or IR, light has slightly longer wavelengths than red light.

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16
Q

Ultraviolet, or UV

A

Ultraviolet or UV, light has slightly shorter wavelengths than violet light.

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17
Q

Transparent

A

Matter that transmits light.

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18
Q

Translucent

A

Materials transmit light but do not let the light travel straight through.

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19
Q

Opaque

A

Opaque materials do not let any light pass through them.

20
Q

Absorption

A

Is the transfer of light energy to matter.

21
Q

Reflection

A

The bouncing of light off a surface.

22
Q

Refraction

A

The change in direction of a wave as it passes from one medium into another at an angle.

23
Q

Scattering

A

Occurs when light is sent in many directions as it passes through a medium.

24
Q

A disturbance that transfers energy from one place to another.

A

Wave

25
Q

The material through which a wave travels.

A

Medium

26
Q

In a longitudinal wave particles move back and forth in the same direction that the wave travels, or parallel to the wave.

A

Longitudinal wave

27
Q

In a transverse wave, particles move perpendicularly to the direction the wave travels.

A

Transverse wave

28
Q

Waves that require a medium.

A

Mechanical wave

29
Q

Are disturbances in electric and magnetic fields.

A

Electromagnetic wave

30
Q

A measure of how far particles in the medium move away from their normal rest position.

A

Amplitude

31
Q

Is the distance over which the waves shape repeats.

A

Wavelength

32
Q

Is the time required for one cycle.

A

Wave period

33
Q

Tells you how many cycles occur in an amount of time, most commonly 1 s.

A

Frequency

34
Q

One hertz is equal to one cycle per second.

A

Hertz

35
Q

The peaks can be drawn as shapes, such as circles or spheres, called wavefronts.

A

Wavefronts

36
Q

The speed at which a wave travels.

A

Wave speed

37
Q

Is the transfer of energy as EM waves.

A

Radiation

38
Q

However, visible light represents only a very small frequency (or wavelengths) that an EM wave can have.

A

Electromagnetic (EM) spectrum

39
Q

Infrared or IR, light has slightly longer wavelengths than red light.

A

Infrared or IR

40
Q

Ultraviolet or UV, light has slightly shorter wavelengths than violet light.

A

Ultraviolet or UV

41
Q

Matter that transmits light.

A

Transparent

42
Q

Materials transmit light but do not let the light travel straight through.

A

Translucent

43
Q

Opaque materials do not let any light pass through them.

A

Opaque

44
Q

Is the transfer of light energy to matter.

A

Absorption

45
Q

The bouncing of light off a surface.

A

Reflection

46
Q

The change in direction of a wave as it passes from one medium into another at an angle.

A

Refraction

47
Q

Occurs when light is sent in many directions as it passes through a medium.

A

Scattering

Vocab (3 decks)

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