Sound

Question 0

Sound needs a medium

Answer 0

We put a buzzer in a bell jar then put a vacuum pimpmat the bottom it will suck the air out, while doing this the noise becomes fainter

Question 1

Sound

Answer 1

Is a from of energy
Made from vibration
Can travel through a solid, liquid, gas

Question 2

Speed of sound air

Answer 2

The speed of sound is 340m/s

Question 3

Echo

Answer 3

An echo is a reflection of sound

Question 4

Ultrasound

Answer 4

Ultrasound Is a sound above our hearing

Question 5

Ear protection

Answer 5

If people are working in a job where sound is above 70db(decibels) they have to wear ear protection.

Question 6

Permanent ear damage

Answer 6

Sound above 115db(decibels) can cause permanent damage( the speakers in a nightclub are 120db(decibels)

Question 7

Energy conversions in hearing

Answer 7

The movement energy is converted to electrical energy and goes to the brain to be processed

Question 8

Loudness

Answer 8

The loudness of a sound is called the sound of intensity level,sound intensity is measured in decibels,a sound level meter is used to measure the loudness of a sound in decibels