Sound Flashcards
How are sounds produced?
Sounds are made when something vibrates
Name five things sound can travel through:
stone air water glass brick
What is the pitch of a note?
a high or low the note is
Michael rings a bell. Describe how the bell makes a sound
The bell vibrates
What does the sound travel through to reach Micahel’s ears
The sound travels through the air
Michael rings the bell and then touches it with his hand. Why does the bell stop making a sound?
It stops vibrating
Sally stretches an elastic band around an empty box.
She pulls the elastic band and lets go. It makes a sound.
What is happening to the elastic band when it is making a sound?
The elastic band is vibrating
Erik makes sounds by twanging a ruler against the edge of the table
Why does the ruler make a sound?
It is vibrating
How can Erik make the sounder softer?
By twanging more gently with less force
How can Erik vary the pitch of the sound he makes?
By varying the length of the ruler hanging off the table
Which material would be best for muffling sound
Plastic bag, stone or foam padding?
Why do you think that
Foam Padding
Because soft surfaces adsorb sound
Explain what sound is and how it travels
Sound is vibrations that travel to our ear. It travels through solids, liquids or gases
Sound can travel through water. True or False?
True
