Waves Flashcards

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1
Q

The primary colours of light are

A

Green, Blue and Red

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2
Q

Light is a

A

Transverse wave

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3
Q

Transverse wave’s vibrations are

A

Perpendicular

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4
Q

The superposition

A

Where 2 waves come together and their displacements combine

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5
Q

The Angle of incidence is the same as

A

The angle of reflection

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6
Q

White light is made of

A

All the colours in the spectrum

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7
Q

red has the

A

Longest wavelength in the spectrum

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8
Q

Grass

A

Absorbs all colours except green which is reflected

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9
Q

Light can only travel in

A

Straight lines

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10
Q

In the retina all images will appear

A

Upside down

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11
Q

Sound waves are caused by

A

Vibrations from objects/particles

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12
Q

Sound cannot travel through a vacuum as

A

it needs particles to vibrate

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13
Q

The more particles

A

The faster the wave travels

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14
Q

The frequency is

A

The number of waves passed through a point per second

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15
Q

Frequency is measured in

A

Hertz(Hz)

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16
Q

Frequency is a measure of

A

PITCH

17
Q

High frequency =

A

High pitch

18
Q

A high amplitude =

A

loud sound

19
Q

light travel faster or slower than sound?

A

Faster

20
Q

Auditory range

A

The range of frequencies you can hear per second

21
Q

humans auditory range

A

20Hz to 20000Hz

22
Q

longer wavelength =

A

Higher Amplitude

23
Q

light reflection

A

Light bounces off the object at the same angle

24
Q

Light absorbed

A

Light is absorbed by the object

25
Q

Transparent

A

Light can travel through without shadows

26
Q

Opaque

A

Light cannot travel through and leaves a shadow

27
Q

Longitudinal waves

A

vibrations are parallel

28
Q

transmitted

A

Light goes through the object, the ray bends depending on the density of the object it’s passing through

29
Q

Luminous objects

A

Give off light

30
Q

We can see non-luminous objects as

A

It reflects light from luminous objects