Measuring Sounds

Some sounds are:

• Slow

• fast

• interesting

• Soft and others loud

What do we use to measure the volume of sounds in decibels?

• a tool

• sound level meter

• telephone

Who did experiments to investigate how we hear sounds?

• 
• 
• 

What are the special units in which sound and volume are measured?

• Kilometres

• Meter

• Decibels

What do you need to create a sound?

• Need wood

• Need movement

• Need fire

How sounds are made?

• when sounds moves forwards and backwards very quikly

• when sounds moves forwards and backwards very slow

• when sounds moves only in the air

What happens when you change the shape of your mouth?

• Sounds change

• the sounds don't change

What do we call the vibration of an object or material?

• Source of material

• Source of sound

• source of an object

What do we call this movement?

• Sound level meter

• Decibels

• Vibration

The loudness of a sound is called

• Robert Boyle

• the volume of a sound

• movement