Waves Flashcards

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

17
Q

High frequency =

A

High pitch

18
Q

A high amplitude =

A

loud sound

19
Q

light travel faster or slower than sound?

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
Transparent
Light can travel through without shadows
26
Opaque
Light cannot travel through and leaves a shadow
27
Longitudinal waves
vibrations are parallel
28
transmitted
Light goes through the object, the ray bends depending on the density of the object it's passing through
29
Luminous objects
Give off light
30
We can see non-luminous objects as
It reflects light from luminous objects