Sound Light And Waves

Question 1

Can sound travel through a gas ??

If so, how do you know ??

Answer 1

Yes

Because when you speak the noise travels through the air

Question 2

Can sound travel through a liquid ??

If so, how do you know ??

Answer 2

Yes

Because when your in a pool you can still hear noises

Question 3

Can sound travel through a solid ??

Answer 3

Yes

Question 4

What is the frequency??

Answer 4

The number of vibrations which the object makes in one second

Question 5

The larger the frequency the _____ the pitch

Answer 5

Higher

Question 6

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

Answer 6

Shorten the key/string

Question 7

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

Answer 7

Louder

Question 8

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

Answer 8

Amplitude

Vibration

Question 9

The larger the _________ the ________ the sound

Answer 9

Amplitude

Louder

Question 10

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

Answer 10

Frequency

Question 11

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

Answer 11

Amplitude

Question 12

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

Answer 12

Flash of lightning

Question 13

Which has the greater speed- sound or light??

Answer 13

Light

Question 14

What speed does sound travel through the air at ??

Answer 14

300m/s

Question 15

What is the speed of sound In water ??

Answer 15

1100m/s

Question 16

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

Answer 16

S=d divided by t

Question 17

What way does light travel??

Answer 17

Straight lines

Question 18

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

Answer 18

Transparent

Question 19

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

Answer 19

Opaque

Question 20

List 2 examples of a transparent object

Answer 20

Glass

Still water

Question 21

List 2 examples of an opaque object

Answer 21

Cardboard

Wood

Question 22

Shadows are formed when light travels past _______ objects

Answer 22

Opaque

Question 23

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

Answer 23

Sharp edge

Question 24

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

Answer 24

Blurred edge

Question 25

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

Answer 25

Earth | Sun

Question 26

Describe what you see during a total solar eclipse

Answer 26

The sunlight is blocked out

Question 27

What is a plane mirror ??

Answer 27

A flat mirror

Question 28

What is the normal ?!

Answer 28

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

Question 29

What is the incident Ray??

Answer 29

Ray of light that is incident towards a lot plane mirror

Question 30

What is the angle of incidence

Answer 30

Angle between the incidence Ray and the normal

Question 31

What is the reflected Ray ??

Answer 31

The Ray extending outward from the light reflection

Question 32

What is the angle of reflection ??

Answer 32

Angle between the Reflected Ray and the normal

Question 33

Sound is produced by the ______of an object

Answer 33

Vibrations

Question 34

What is refraction ??

Answer 34

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

Question 35

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

Answer 35

A series of colours called a spectrum is produced | Dispersion

Question 36

What is the effect of ultra violet radiation ??

Answer 36

It causes some substances to fluoresce

Question 37

What are the 7 types of electrocmagnetic in order ??

Answer 37

``` Gamma rays X-Rays Ultra violet Visible light Infra red Micro waves Radio waves ```

Question 38

Give one everyday use of RADIO WAVES ??

Answer 38

Radio

Question 39

give one every use of MICRO WAVES

Answer 39

Microwave ovens

Question 40

Give one everyday use of INFRA RED

Answer 40

Heaters

Question 41

Give one everyday use of VISABLE LIGHT ??

Answer 41

To see anything

Question 42

Give one everyday use of ULTRA VIOLET??

Answer 42

Ultra violet lights

Question 43

Give one everyday use for X-RAYS

Answer 43

X-RAY scans

Question 44

Give one every day use of GAMMA RAYS ??

Answer 44

To detect faults in metal work

Question 45

What unit is frequency measure in??

Answer 45

Hertz (Hz)