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Science > Sound Light And Waves > Flashcards

Sound Light And Waves Flashcards

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1
Q

Can sound travel through a gas ??

If so, how do you know ??

A

Yes

Because when you speak the noise travels through the air

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2
Q

Can sound travel through a liquid ??

If so, how do you know ??

A

Yes

Because when your in a pool you can still hear noises

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3
Q

Can sound travel through a solid ??

A

Yes

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4
Q

What is the frequency??

A

The number of vibrations which the object makes in one second

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5
Q

The larger the frequency the _____ the pitch

A

Higher

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6
Q

How do you get a higher note on an instrument ??

A

Shorten the key/string

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7
Q

If something is it harder, it vibrates more and sounds _______

A

Louder

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8
Q

The maximum distance moved by a vibrating object from its rest position is called the ________ of ___________

A

Amplitude

Vibration

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9
Q

The larger the _________ the ________ the sound

A

Amplitude

Louder

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10
Q

The pitch of a sound is determined by the ______ of the vibration

A

Frequency

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11
Q

The loudness of a sound is determined by the _______ of the vibration

A

Amplitude

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12
Q

In a thunder storm what do you notice first a flash of lightning or thunderstorm ??

A

Flash of lightning

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13
Q

Which has the greater speed- sound or light??

A

Light

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14
Q

What speed does sound travel through the air at ??

A

300m/s

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15
Q

What is the speed of sound In water ??

A

1100m/s

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16
Q

Give one way in which you can calculate the depth of the sea

A

S=d divided by t

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17
Q

What way does light travel??

A

Straight lines

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18
Q

Some substances allow light to pass through them. These are described as _________

A

Transparent

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19
Q

Some other materials don’t allow light to pass through them. These are described as _______

A

Opaque

20
Q

List 2 examples of a transparent object

A

Glass

Still water

21
Q

List 2 examples of an opaque object

A

Cardboard

Wood

22
Q

Shadows are formed when light travels past _______ objects

A

Opaque

23
Q

Describe the shadow formed when the light sources is small….

A

Sharp edge

24
Q

Describe the shadow formed when the light source is large….

A

Blurred edge

25
Q

The moon rotates around the _____ and together they rotate around the _____

A

Earth

Sun

26
Q

Describe what you see during a total solar eclipse

A

The sunlight is blocked out

27
Q

What is a plane mirror ??

A

A flat mirror

28
Q

What is the normal ?!

A

The line that is right angle to plane mirror at the point where the incident Ray touches the line

29
Q

What is the incident Ray??

A

Ray of light that is incident towards a lot plane mirror

30
Q

What is the angle of incidence

A

Angle between the incidence Ray and the normal

31
Q

What is the reflected Ray ??

A

The Ray extending outward from the light reflection

32
Q

What is the angle of reflection ??

A

Angle between the Reflected Ray and the normal

33
Q

Sound is produced by the ______of an object

A

Vibrations

34
Q

What is refraction ??

A

The bending of light when it travels from one material into another

35
Q

What happens when white light passes through a triangular prism ??

A

A series of colours called a spectrum is produced

Dispersion

36
Q

What is the effect of ultra violet radiation ??

A

It causes some substances to fluoresce

37
Q

What are the 7 types of electrocmagnetic in order ??

A 
Gamma rays
X-Rays 
Ultra violet
Visible light
Infra red
Micro waves
Radio waves
38
Q

Give one everyday use of RADIO WAVES ??

A

Radio

39
Q

give one every use of MICRO WAVES

A

Microwave ovens

40
Q

Give one everyday use of INFRA RED

A

Heaters

41
Q

Give one everyday use of VISABLE LIGHT ??

A

To see anything

42
Q

Give one everyday use of ULTRA VIOLET??

A

Ultra violet lights

43
Q

Give one everyday use for X-RAYS

A

X-RAY scans

44
Q

Give one every day use of GAMMA RAYS ??

A

To detect faults in metal work

45
Q

What unit is frequency measure in??

A

Hertz (Hz)

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