Sound And Light Flashcards
(20 cards)
What can sound travel through
Gas,liquid and solid
What can’t sound travel through
A vacuum
What is the frequency of a sound
The number of vibrations which an object makes in one second
What unit is frequency measured in
hertz (hz)
The frequency decides the ____ of a sound
Pitch
The larger the frequency the _____ the pitch
Larger
What is an audible range
The frequency that u hear a sound
Does every one have the same audible range
No
How do humans produce sound
Air passes over their vocal cords causing them to vibrate
The maximum distance moved by a vibrating object from it rest position is called the _____ of the vibration
The amplitude
The larger the amplitude the _____ the sound
Louder
The pitch of a sound is determined by the _____ of the vibration
Frequency
The loudness of a sound is determined by the _____ of the vibration
amplitude
Who invented the telephone
Alexander graham bell
What affects does sound have on your
It can cause temporary deafness or permanent deafness
Which has the greater speed sound or light
Light
When are echoes produced
When sound is reflected
What does luminous mean
Gives out own light
What speed does light travel at
186000 miles per second
Sound is produced by the _____ of an object
The vibration
