Sound

Question 1

What is sound ?

Answer 1

A wave or vibration that travels through the three states of matter, it is something that can be heard

Question 2

How does sound travel ?

Answer 2

It starts with a mechanical movement causing vibration and causing the particles around the object to vibrate too and these vibration passes form one molecule to the other and help sound travel into our ears

Question 3

What can’t sound travel through ? And why ?

Answer 3

Sound cannot travel through a vacuum

Because there are no particles to vibrate

Question 4

How many hertz is the human ear capable of detecting ?

Answer 4

20Hz to 20,000 Hz

Only between these hertz

Question 5

What is the relationship between frequency , pitch and wavelength ?

Answer 5

Higher the frequency = Higher pitch = Shorter wavelength

Question 6

What are the two sounds we cannot hear ?

Answer 6

Ultrasonic Above 20,000 Hertz

and

infrasonic Below 20 Hertz

Question 7

What is frequency measured in ?

Answer 7

Herts (Hz)

Question 8

Where does sound wave travels fastest ?

Answer 8

Solids

Explanation : Because the particles are closer together and easier for the vibration to pass on to one molecule to the other

Question 9

Where does sound wave travel slower ?

Answer 9

Gases

Explanation : Because it hard for the molecules to pass on the vibration since it so far apart