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GCSE Science Edexcel 2016 Onwards > Physics Topics 4-5 Waves and Electromagnetism > Flashcards

Physics Topics 4-5 Waves and Electromagnetism Flashcards

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1
Q

What does a wave transfer?

A

Energy

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2
Q

Describe an experiment to show that in water waves only the wave moves, not the water.

A

Put a rubber duck on a wave tank

The rubber duck would bob up and down but not move

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3
Q

What is the frequency of the waves?

A

The number of waves per second

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4
Q

What is the wavelength of a wave?

A

The distance between two peaks of a wave

The distance between two rarefactions/compressions

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5
Q

What is the amplitude of a wave?

A

Its height

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6
Q

What is the period of a wave?

A

The time taken for one wave to pass

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7
Q

What is the difference between a longitudinal and transverse wave?

A 
Longitudinal oscillates (moves) parallel to energy transfer
Transverse oscillates (moves) perpendicular to energy transfer
Longitudinal has rarefactions and compressions
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8
Q

Give an example of a transverse wave?

A

Light and electromagnetic waves

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9
Q

Give an example of a longitudinal wave?

A

Sound

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10
Q

What is the equation that links wave speed, frequency and wavelength?

A

Wave speed = frequency x wavelength

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11
Q

What is the equation that links wave speed, distance and time?

A

Wave speed = distance ÷ time

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12
Q

Are all electromagnetic waves transverse or longitudinal?

A

Transverse

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13
Q

What is the speed of all electromagnetic waves in a vacuum?

A

300,000,000m/s

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14
Q

List the 7 types of electromagnetic wave in order

A

Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma
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15
Q

List the 7 colours of the visible light spectrum

A

Red Orange Yellow Green Blue Indigo Violet

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16
Q

Which type of electromagnetic wave has the highest frequency?

A

Gamma

17
Q

Which type of electromagnetic wave has the highest wavelength?

A

Radio

18
Q

Which type of electromagnetic wave has the lowest frequency?

A

Radio

19
Q

Which type of electromagnetic wave has the lowest wavelength?

A

Gamma

20
Q

What type of radiation does our eye detect?

A

Visible Light

21
Q

Which type of electromagnetic wave is the most dangerous?

A

Gamma (highest frequency)

22
Q

Describe the dangers of microwaves to humans?

A

Heats internal body cells

23
Q

Describe the dangers of infrared to humans?

A

burns skins

24
Q

Describe the dangers of ultraviolet waves to humans?

A

Damages skin cells causing cancer

25
Q

Describe the dangers of x-rays and gamma rays to humans?

A

Mutates cells causing cancer

26
Q

Describe a use of radio waves

A

Communications and satellites

27
Q

Describe a use of microwaves

A

Heating food, communications and satellites

28
Q

Describe a use of infrared

A

Communications, security systems, TV remotes

29
Q

Describe a use of visible light

A

Photography and vision

30
Q

Describe a use of ultraviolet waves

A

Security marking, fluorescent lighting, disinfecting water, detecting forged bank notes

31
Q

Describe a use of x-rays

A

Medical imaging, airport security

32
Q

Describe a use of gamma rays

A

Sterilising food and medical equipment, detection of cancer and cancer treatment

GCSE Science Edexcel 2016 Onwards (11 decks)

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