Sound and Light CSV

Question 1

Light travels in

Answer 1

Straight lines

Question 2

Light forms shadows because

Answer 2

An opaque object gets in the way of the light

Question 3

What is the law of reflection

Answer 3

Angle of incidence = angle of reflection

Question 4

Name 3 luminous objects

Answer 4

Sun, candle, bulb etc.

Question 5

When light travels into a denser subject the light is bent ñ this is called

Answer 5

Refraction

Question 6

Which way does light bend when it enters a more dense substance

Answer 6

Towards the normal

Question 7

Objects below water appear

Answer 7

Closer

Question 8

When light passes through a prism it is

Answer 8

Dispersed

Question 9

The order of the colours in a spectrum are

Answer 9

Red, orange, yellow, green, blue, indigo, violet

Question 10

The reflection of sound is known as

Answer 10

An echo

Question 11

The pitch of a sound is determined by the

Answer 11

Frequency of the wave

Question 12

The volume of a sound is determined by the

Answer 12

Amplitude of the wave

Question 13

A louder sound is produced when

Answer 13

Size of the vibration is increased

Question 14

A lower sound is produced when

Answer 14

The vibration is slower

Question 15

Which is faster, sound or light

Answer 15

Light

Question 16

Sounds are made when objects

Answer 16

Vibrate

Question 17

Sound cannot travel through a

Answer 17

Vacuum

Question 18

Sound increases in loudness by

Answer 18

Increasing amplitude

Question 19

Sounds go up in pitch by

Answer 19

Vibrating faster

Question 20

Which type of material does sound travel fastest in

Answer 20

Solid

Question 21

How do sounds damage ears

Answer 21

Loud noises produce bigger vibrations which can burst your eardrum