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pwc-Sound Unit (1st grade) sol. 1.2

Terms

undefined, object
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What happens to sound if we change the speed of its vibrations?
The pitch changes.
How do we make a soft sound?
By striking an object lightly.
What happens when sound waves travel slowly?
The pitch is low.
What happens when sound waves travel quickly?
The pitch is high.
How can we describe sounds we hear?
By pitch
Can vibrations pass through solids, liquids,and gases?
yes
What makes sound?
Vibrations
How do we make a loud sound?
By striking an object hard.
How do you change the pitch of a sound we hear?
Change how fast an object vibrates.
Give an example of a vibration.
Humming, strumming a guitar, plucking a rubber band, etc.
What are the invisible waves called that are caused by an object moving back and forth quickly?
Vibrations

Deck Info

11

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