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Physics Paper 2 > Waves > Flashcards

Waves Flashcards

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1
Q

What is a wave?

A

Transfer of energy without matter

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2
Q

What makes a wave longitudinal and example?

A

Vibrations that are parallel to direction e.g sound waves

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3
Q

What makes a wave transverse and example?

A

Vibrations that are at right angles to direction e.g light

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4
Q

What is amplitude?

A

The maximum displacement of a point of a wave from its rest position

https://studymind.co.uk/wp-content/uploads/2022/07/1-3.png

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5
Q

What is wavelength?

A

Distance measured from peak to peak

https://keystagewiki.com/images/thumb/6/64/Wavelength.png/400px-Wavelength.png

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6
Q

What is frequency?

A

The number of waves passing a point per second

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7
Q

What is the unit for frequency?

A

Hertz

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8
Q

What is the only electromagnetic wave we can detect with our eyes?

A

Light

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9
Q

What is an application for radio waves?

A

TV, radio

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10
Q

What is an application for microwaves?

A

Satellites, cooking food

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11
Q

What is an application for infrared?

A

Electrical heaters, infrared cameras

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12
Q

What is an application for visible light?

A

Fibre optic

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13
Q

What is an application for ultraviolet?

A

Lamps, sun tanning

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14
Q

What are applications for x-rays and gamma rays?

A

Medical imaging, treatments

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15
Q

What happens when a wave crosses a boundary between two materials at an angle, and what is it called?

A

Speed up or slow and change directions - refraction

https://images.squarespace-cdn.com/content/v1/5c5aed8434c4e20e953d6011/1572787365069-I24Y38B966PWMW7HRPL0/IMG_0437.jpeg

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16
Q

What happens to the wavelength and frequency of a refracted wave?

A

Wavelength changes, frequency stays the same

17
Q

How are EM waves related to atoms and nuclei?

A

Changes in atoms and nuclei can result in electromagnetic waves being generated or absorbed

18
Q

Where do gamma rays originate from?

A

Changes in nucleus

19
Q

What are the units for radiation dose?

A

Sieverts, Sv

20
Q

How many millisieverts (mSv) make up 1 Sievert?

A

1000

21
Q

What affect does ultraviolet have on skin?

A

increase risk of skin cancer, age prematurely

22
Q

What EM waves are ionising?

A

X-Rays and gamma rays

23
Q

What effects can ionising radiation have on the body?

A

Can cause mutation of genes and cancer

Physics Paper 2 (3 decks)

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