Science Sound Flashcards
What is necessary for sound to exist?
Vibrating particles are ended for sound to exist
What is sound?
Sound is a wave of vibrations
Why does a person hear sound?
A person hears sound because vibrating particles reach your ear and the eardrum absorbs the energy and vibrates then the brain interprets the sound.
What body part of a person allows them to hear sound? How does it work?
The ear allows a person to hear sound. The eardrum absorbs the vibrating particles and when that happens the energy vibrates then the brain interprets the sound.
In what direction does sound move?
Sound moves in all directions.
Where can sound not travel? Why?
Sound can’t travel through an empty space without air because there are no particles to vibrate the space.
In what medium does sound travel the fastest?
Sound travels through a solid the fastest.
In what medium does sound travel the slowest?
Sound travels the slowest in a gas.
What is pitch?
Pitch is how high or low the sound is.
The faster the vibration the _________ the pitch.
Higher
How can you make the pitch of an object go higher?
You can make a pitch of an object go higher by making a greater frequency.
How can you make the pitch of an object go lower.
You can make the object have lesser frequency.
Give an example of an object that has a high pitch.
A tea kettle
Give an example of an object that has a low pitch.
A tuba
What does it mean when sound is reflected.
When sound is reflected it is bouncing back.
Give an example of sound being reflected.
When there is an echo
What does it mean when sound is absorbed?
It is sucked up
Give an example of sound being absorbed.
Talking in a room full of furniture
Which travels faster sound or light?
Light
Give an example of a testable question.
Which car goes faster the red or blue one.
What makes a question testable?
If the question can be done you have the materials , it can be measured and if it is safe
