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Physics Nat 5 Test > Wave Perameters And Behaviours > Flashcards

Wave Perameters And Behaviours Flashcards

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1
Q

What is the definition of wavelength

A

The length of 1 wave

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2
Q

What is the unit of wavelength

A

Metres

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3
Q

What is the definition of amplitude

A

The height measured from crest to axis (middle)

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4
Q

The greater the waves energy the…

A

Greater the amplitude

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5
Q

How can you calculate the speed of a wave

A

D = V x T

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6
Q

What is the speed of light in air

A

3x10 to the power of 8 ms-1

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7
Q

What is the speed of sound in air

A

340ms-1

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8
Q

What are some examples of light travelling faster than sound

A

Fireworks and thunder and lightning

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9
Q

Describe an experiment used to calculate the speed of sound

A

Set two microphones a metre apart from each other with a timer attached. Then play a noise behind microphone 1 and see how long it takes the sound to reach microphone 2. When the noise reaches microphone one the start the timer and wind noise reaches microphone to the stop the timer. Then measure the distance between the two microphones and use V equals D/T.

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10
Q

What is another way of calculating speed of a wave

A

V = f λ

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11
Q

What is the definition of the period of a wave

A

The time taken for one complete wave to occur

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12
Q

How do you calculate period

A

T = 1/f

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13
Q

What is the unit of period

A

Seconds

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14
Q

What is the definition of a longitudinal wave

A

Away for particles vibrate in the same direction as the wave

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15
Q

What is an example of a longitudinal wave

A

Sound

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16
Q

What is the definition of a transverse wave

A

A wave where particles vibrate at 90° to the direction of travel

17
Q

What are examples of transverse waves

A

Light and water

18
Q

What is diffraction

A

Diffraction is where waves bend around an obstacle

19
Q

Larger the wavelength the…

A

Easier it will diffract

20
Q

Why will radio waves be received better in hilly regions then TV waves

A

Because they have a longer wavelength

21
Q

LOOK FOR TIME IN QUESTIONS

A
22
Q

ADD UNITS

A
23
Q

Does a wave with a short wave length diffract more than a wave with a long wavelength

A

No

Physics Nat 5 Test (5 decks)

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