What is Sound
What is sound?
A type of energy you hear
What causes sound?
Vibrations
What is volume?
How loud or soft a sound is
What is pitch?
How high or low a sound is
What sounds might you hear in a classroom?
Students talking, pencils tapping, chairs/desks moving, teacher speaking
How does sound travel?
Through waves
What is vibration?
When objects move back and forth.
The faster an object vibrates, the ______ the volume of the sound
Louder
How is pitch determined?
By the frequency of the sound wave
This type of sound is heard when you are looking at something
Watching tv
Sound waves can travel through different materials such as?
Solids, liquids, and gases
What is an example of an object that can cause vibration?
Car moving, glass breaking, rubberbands
The slower an object vibrates, the ______ the volume of the sound
Softer
_______ waves are closer together
High
What is like a voice, but comes from a small box, and can play music?
Does a loud sound have a high wave or a low wave?
Energy
______ waves are farther apart
Low
What type of sound is produced when there is an emergency?
An alarm
Sounds travel at different _____ through different materials
Speeds
Sound can also turn into which type of energy?
Mechanical (because it moves/vibrates)
What instrument that is big but produces a soft sound?
A piano
Waves with a _______ frequency have a high pitch. Waves with a _______ frequency have a low pitch.
High, low
What instrument makes a "boom" when you hit it, but can't be seen?
A drum