GCSE-Waves-EMSpectrum-Sound Flashcards Preview

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

Flashcards in GCSE-Waves-EMSpectrum-Sound Deck (24)
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1

Wave Equation

v = f λ

2

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

1/2 x speed of sound x echo time

3

The member of the electromagnetic spectrum with the shortest wavelength

Gamma

4

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

X-rays

5

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

Ultra-Violet

6

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

Visible Light

7

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

Infra-Red

8

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

Microwaves

9

The member of the electromagnetic spectrum with the longest wavelength

Radio

10

Travelling waves transfer ...?... from one point to another

energy

11

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

transverse

12

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

longitudinal

13

Sound is a ...?... wave.

longitudinal

14

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

equals

15

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

frequency

16

Ultrasound is sound with a frequency ...?

greater than 20 000 Hz

17

Ultrasound is used in industry to detect ...?

defects in metal.

18

Ultrasound is used in medicine to measure ...?

foetal head diameter.

19

Are water waves transverse or longitudinal?

Transverse

20

Are electromagnetic waves transverse or longitudinal?

Transverse

21

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

Frequency

22

The unit for frequency.

Hertz (Hz)

23

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

Wavelength

24

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

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.