Sound and light

Question 1

What is sound?

Answer 1

Sound is a vibration and is a longitudinal wave

Question 2

What is a wave?

Answer 2

A wave is a oscillation of vibration that transfers energy or information

Question 3

What is a longitudinal wave?

Answer 3

A longitudinal wave moves backwards and forwards

Question 4

What is a transverse wave?

Answer 4

A transverse wave moves up and down

Question 5

What is superpositon?

Answer 5

Superposition is add up or cancel out

Question 6

Out of solids, liquids and gases, which does sound travel the fastest through?

Answer 6

Sound moves fastest when the particles are closely packed together, so it moves fastest in solids

Question 7

What is faster sound or light?

Answer 7

Light is faster because it is almost a million times faster than sound

Question 8

What is an echo?

Answer 8

An echo is when sound reflects of a surface. Sound takes time to travel. There is time delay between making a sound and hearing an echo

Question 9

How do you reduce reverberation?

Answer 9

By covering the walls with soft materials and putting carpets on the floor

Question 10

How does a microphone work?

Answer 10

When a singer sings into a microphone the sound wave hits a flexible plate called a diaphragm. The diaphragm vibrates and the sound wave is carried

Question 11

What is light?

Answer 11

Light is a radiation that can be seen with a human eye