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GCSE Physics > GCSE-Waves-EMSpectrum-Sound > Flashcards

GCSE-Waves-EMSpectrum-Sound Flashcards

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1
Q

Wave Equation

A

v = f λ

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2
Q

For echo-location, the distance to the reflecting surface is equal to…?

A

1/2 x speed of sound x echo time

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3
Q

The member of the electromagnetic spectrum with the shortest wavelength

A

Gamma

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4
Q

The member of the electromagnetic spectrum with the second-shortest wavelength

A

X-rays

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5
Q

The member of the electromagnetic spectrum with the next longest wavelength after X-rays

A

Ultra-Violet

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6
Q

The fourth member of the electromagnetic spectrum in order of increasing wavelength

A

Visible Light

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7
Q

The member of the electromagnetic spectrum with the next longest wavelength after Visible Light

A

Infra-Red

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8
Q

The member of the electromagnetic spectrum with the second-longest wavelength

A

Microwaves

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9
Q

The member of the electromagnetic spectrum with the longest wavelength

A

Radio

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10
Q

Travelling waves transfer …?… from one point to another

A

energy

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11
Q

A wave in which the direction of wave motion is perpendicular to the direction of particle vibration is a …?… wave.

A

transverse

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12
Q

A wave in which the direction of wave motion is parallel to the direction of particle vibration is a …?… wave

A

longitudinal

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13
Q

Sound is a …?… wave.

A

longitudinal

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14
Q

The Law of Reflection says that the angle of incidence …?… the angle of reflection.

A

equals

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15
Q

The higher the …?… of electromagnetic radiation, the more damaging to the body it is likely to be.

A

frequency

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16
Q

Ultrasound is sound with a frequency …?

A

greater than 20 000 Hz

17
Q

Ultrasound is used in industry to detect …?

A

defects in metal.

18
Q

Ultrasound is used in medicine to measure …?

A

foetal head diameter.

19
Q

Are water waves transverse or longitudinal?

A

Transverse

20
Q

Are electromagnetic waves transverse or longitudinal?

A

Transverse

21
Q

What is the name given to the number of complete waves passing a given point (or created) per second?

A

Frequency

22
Q

The unit for frequency.

A

Hertz (Hz)

23
Q

What is the name given to the distance from one crest (or trough or compression or rarefaction) to the next?

A

Wavelength

24
Q

How to draw diagrams showing reflection or refraction of plane waves.

A

Draw rays first, obeying the usual rules for reflection or refraction. Then draw the waves perpendicular to the rays, ensuring wavelength is unchanged for reflection.

GCSE Physics (11 decks)

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