vocabulary
pushing air back and forth
vibration
If a string is vibrating quickly, is the pitch high or low?
It is high.
Why do we move to the side when we're talking to someone if someone or something gets in our way?
Because that someone or something is receiving our sound vibrations so it's harder for us to hear.
Why don't we feel the vibrations?
Most volumes aren't loud enough to feel.
A series of gigantic waves caused by an earthquake underwater.
tsunami
how high or low a sound is
pitch
True or false: Sound can travel through objects and liquid.
True
If your sister is talking on the phone and then shuts her door, the sound is quieter. What causes the volume change?
the sound is bouncing off of the door
Ringtones that are high pitched have (short/long) wave lengths.
They are short (very close together) wave lengths.
Ash from these can spread hundreds of miles causing lots of devastation.
volcano
Energy you can hear from vibrations is called...
sound
When sound bounces off of something and comes back in the direction it came from it is called an...
echo
What is one example of an animal that uses echolocation to survive?
Bats or Beluga whales
When Doug pumped the sound into the container without air, could you hear the sound?
No...and this mimics space...you can't hear sound there because there's no material to vibrate!
earthquake
sound waves
What is inside your ear that vibrates when you hear sounds?
Eardrum
If I attach a string to two paper cups and pull them taught (tight) I can hear someone talking in one cup while my ear is on the other. How come?
The vibrations travel through the cup, down the string, into the other cup.
Does sound travel (farther/closer) in water?
It travels farther...that's why whale sounds can reach other whales from so far away.
These are responsible for more deaths than any other natural disaster.
Floods
how loud or soft a sound is
volume
The more space between sound waves the (lower/higher) the pitch?
Lower
Is it possible for sound in real life to break things, like the fat lady singing?
Yes, if the volume (vibrations) are strong enough.
True or false: A musical note can have the same pitch, but different volumes.
True
This natural disaster can happen naturally to help ecosystems start fresh with healthy vegetation.
wildfire