What is sound?
How are sounds made?
By vibrations moving through the air.
What is the difference between pitch and volume?
Pitch describes how high or low a sound is, while volume describes how loud or quiet a sound is.
Through which material does sound travel the fastest: air, water, or solid?
Solid, because particles are closer together.
What are ear defenders used for?
To protect ears from loud noises.
What is sound?
Something we hear, made by vibrations traveling through a medium (air, water, or solids).
Which will produce a higher pitch: a thick guitar string or a thin guitar string?
A thin guitar string.
What happens when sound travels underwater?
It moves faster than in air but is harder for humans to hear.
What are some good materials for blocking sound?
Soft materials like foam, carpets, and thick curtains.
How does sound travel from its source to ours ears?
Through vibrations moving through a material (air, water, or solids).
How can you change the pitch of a drum?
Tapping in different locations, tapping it harder or softer.
Why does sound travel better through metal than through air?
Metal has tightly packed particles that allow vibrations to pass more quickly.
Why do recording studios have padded walls?
To absorb sound and stop echoes.
What is the unit we measure sound with?
Decibels (dB)
What happens to a sound wave when the volume increases?
The wave gets taller (greater amplitude/bigger "mountain").
If a person is far away from a speaker, how will the sound change?
It will get quieter as the sound waves spread outo.
What happens to sound when it hits a soft surface?
It gets absorbed and becomes quieter.
How does sound behave in a vacuum?
Sound cannot travel because there is no air or particles to carry vibrations.
What happens to pitch when a flute player covers holes on the instrument?
The pitch gets lower.
Why do we hear echoes in large empty rooms?
Sound waves bounce off walls and return to our ears.
How can you reduce noise in a classroom?
Use carpets, curtains, or close doors and windows.