Vibration
What movement produces sound waves?
Vibration
Sound needs what to travel?
a medium
What does pitch describe in sound?
Answer: how high or low a sound is
How does light travel?
Answer: in straight lines
What type of material allows light to pass through?
Answer: transparent
What object did we use in class to show vibrations?
Rubber band, Ruler, desk
Name one medium sound travels through.
air, water, string, or solids
What does volume describe in sound?
Answer: how loud or soft a sound is
What is it called when light bounces off a surface?
Answer: reflection
What type of material blocks light?
Answer: opaque
When something vibrates, what type of waves are created?
Sound waves
Can sound travel through empty space?
Answer: no
What happens to pitch when a string becomes tighter?
Answer: pitch becomes higher
Name one object that can reflect light.
Answer: mirror
Name one transparent material.
Answer: glass or clear plastic
Answer: glass or clear plastic or any correct answer
Explain what a vibration is.
Answer: a back-and-forth movement.
Why can't sound travel through space?
Answer: there is no matter or medium
What happens to volume when vibrations become stronger?
Answer: the sound becomes louder
Name one tool people can use to send light signals.
Answer: mirror or flashlight
Name one opaque material.
Answer: wood, metal, cardboard
What must happen first for sound to be produced?
Answer: an object must vibrate
In the cup-and-string phone experiment, what carried the sound?
Answer: the string
What happens to pitch when a string becomes looser?
Answer: pitch becomes lower
Why is reflection useful for communication?
Answer: it helps send messages using light
Why can we see through glass but not wood?
Answer: glass lets light pass through but wood blocks light