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physics gcse > Waves > Flashcards

Waves Flashcards

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1
Q

What do waves transfer?

A

Energy and information

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2
Q

How do the particles in a wave move?

A

They oscillate to and fro about a point

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3
Q

What are the two different types of waves

A

Transverse and longitudinal

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4
Q

What is a transverse wave

A

A wave that oscillates perpendicular to the direction of energy transfer

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5
Q

Give an example of a transverse wave

A

Water wave

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6
Q

What is a longitudinal wave

A

Waves that oscillate parallel to the direction of energy transfer

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7
Q

Give an example of a longitudinal wave

A

Sound wave

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8
Q

What is a longitudinal wave made up of

A

Compressions and rarefactions

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9
Q

What is a mechanical wave

A

A wave that needs a medium to travel through

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10
Q

What is an electromagnetic wave

A

A wave that can travel through a vacuum

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11
Q

What type of wave are all electromagnetic waves

A

Transverse waves!!

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12
Q

What is the amplitude

A

The distance from the midpoint to the crest or trough of the wave

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13
Q

The greater The amplitude of a wave the more what?

A

The more energy it carries

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14
Q

What is the wavelength

A

Is the distance from one crest to the next crest.

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15
Q

What is the frequency of a wave

A

Is the number of wave crests that pass a point in one second.

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16
Q

What is the period of a wave

A

Is the time it takes for one wavelength to pass a point

17
Q

What is the wavelength of a longitudinal wave

A

From one compression to the nest compression

18
Q

What are incident waves

A

Waves travelling towards a barrier or a boundary

19
Q

What happens to a wave that hits a straight barrier

A

It reflects at the same angle to the barrier as the incident wave

20
Q

What is refraction

A

When a wave crosses a boundary between substances it changes speed and wavelength unless it hits it at 90 degrees

physics gcse (16 decks)

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