Abeka 4th Grade, Science Quiz 15, (pp. 131 - 136)
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larynx
a boxlike chamber in the air passage in your throat
all states of matter - solid, liquid, gas
Sound waves can travel through
solid
Sound waves travel better through air or solid?
when an object vibrates
sound is produced
186,000 miles per second
the speed of light
1,100 feet per second
the speed of sound
the higher your voice will be
the tighter your vocal cords are pulled
vibrate
to move rapidly back and forth
vocal cord
two stretchy bands of tissue inside the larynx
they become weaker
what happens as sound waves travel away from the source of the sound
through empty space
where can sound waves not travel?