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P1: Waves and Radiation > L1: Waves > Flashcards

L1: Waves Flashcards

Types of waves and their properties

1
Q

What are the two types of waves?

A

Transverse and longitudinal

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2
Q

Define transverse wave

A

Oscillations are at a right angle to the direction of travel

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3
Q

Define longitudinal wave

A

Oscillations are parallel to the direction on travel

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4
Q

Examples of a transverse wave

A

Light, seismic S waves, water waves

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5
Q

Examples of longitudinal waves

A

Sound, seismic P waves, Ultrasound

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6
Q

What do waves transfer?

A

Energy

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7
Q

Do waves transfer matter?

A

No

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8
Q

Where do mechanical waves cause oscillations?

A

They cause oscillations of particles in a solid, liquid or gas and must have a
medium to travel through

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9
Q

Where to electromagnetic waves cause oscillations?

A

They cause oscillations in magnetic and electrical fields

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10
Q

Define crest

A

Highest point above the equilibrium

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11
Q

Define trough

A

Lowest point below the equilibrium

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12
Q

In what type of wave can you observe a crest and a trough?

A

Transverse

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13
Q

Define amplitude

A

the maximum displacement of a point of a wave from its equilibrium

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14
Q

Define period

A

The time taken for a full cycle of a wave

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15
Q

Define frequency

A

The number of oscillations per second, measured in Hertz (Hz)

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16
Q

Define wavelength

A

The distance of a full cycle of a wave, measure in metres (m)

17
Q

Define compression

A

Where particles of a medium are squished together

18
Q

Define rarefaction

A

where the particles of a medium are further apart (rarefied)

19
Q

What is the equation for wavespeed?

A

Wavespeed (m/s) = frequency (Hz) * wavelength (m)

20
Q

Symbol equation for wavespeed

A

v=fλ

21
Q

What is a ripple tank?

A

A common way of making measurements of waves using a ruler

22
Q

How are the waves shown in a ripple tank?

A

A light is shined through the water waves to show them

P1: Waves and Radiation (1 decks)

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