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Physics > Waves > Flashcards

Waves Flashcards

Types of waves, electromagnetic spectrum ect

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1
Q

Name a transverse wave

A

Radio waves

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2
Q

Name a longitudinal wave

A

Sound waves

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3
Q

In a longitudinal wave, wave vibrations are _______ to the directions of motion

A

Perpendicular

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4
Q

In a transverse wave, wave vibrations are _______ to the wave direction

A

Parallel

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5
Q

What is the direction of the wave also known as?

A

Wave propagation

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6
Q

Wavelength

A

Distance between two waves

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7
Q

Amplitude

A

Height of a wave from the resting position

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8
Q

What does amplitude increase?

A

Volume

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9
Q

Bigger amplitude=More ____

A

Energy

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10
Q

Can sound waves travel through a vacuum? Why?

A

No, because they require a medium to travel through

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11
Q

Which state of matter do sound waves travel through thequickes?

A

Solids

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12
Q

What is human hearing range?

A

20 hz to 20,000 hz

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13
Q

What does ultrasound mean?

A

Beyond human hearing range

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14
Q

What does infrared sound mean?

A

Below human hearing range

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15
Q

How does the ‘clap’ method work?

A

Measuring the distance between the clap and the surface, and dividing it by the time taken to hear the echo., to get the speed of sound.

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16
Q

How is a datalogger more precise?

A

It removes human hearing time.

17
Q

List the electromagnetic waves from longest wavelength to shortest.

A

Radiowaves, Microwaves, Infra-red, visible light, ultrasound, x-ray, gamma ray

18
Q

Name 3 properties of electromagnetic waves

A
  1. They are transverse
  2. They transfer energy
  3. They travel at the same speed through a vacuum
19
Q

Uses of radio waves

A

Broadcasting

20
Q

Uses of microwaves

A

Spacecraft communication

21
Q

Uses of infra-red

A

Electrical heaters

22
Q

Uses of visible light

A

Illumination

23
Q

Uses of ultraviolet

A

Sterilisation

24
Q

Uses of x-rays

A

To see bone fractures

25
Q

Uses of gamma rays

A

Tumour removal

26
Q

Formula for frequency

A

1/time period or wave speed/wave length

27
Q

Equation for wave speed

A

Frequency * Wave length

28
Q

Industrial use of ultrasound

A

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Physics (1 decks)

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