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20 Cards in this Set

  • Front
  • Back
Sound waves move outward from their source in all ____________________.
directions
Sound waves travel at different __________ through all kinds of matter.
speeds
You can make a sound ____________ by using a stronger force to make the vibrations.
louder
Name the 3 main parts of the ear.
outer ear, middle ear, and inner ear
Vibrations move from the ear bones in the middle ear to the ______________.
cochlea
The ___________________ of a sound is always a vibrating object.
source
Vibrations you can hear are called ______________.
sound
Large, hard smooth surfaces _____________ sound waves.
reflect
Rough, soft, or uneven surfaces ___________ sound waves.
absorb
A sound that reflects clearly enough to be heard again is called an _________.
echo
Sound travels the fastest through what state of matter (solid, liquid, or gas)?
solid
What characteristic of sound helps us hear the differences in sounds?
quality
What characteristic of sound describes how loud or soft a sound is?
volume
What characteristic of sound describes how high or low a sound is?
pitch
What are 4 ways you can make an object vibrate?
rubbing, plucking, hitting, or blowing
The outer ear collects vibrations and sends them through the ear canal to the ___________ .
eardrum
Vibrations move from the eardrum to the ______ ________ in the middle ear.
three bones
Vibrations pass from the ear bones in the middle ear to the _____________ in the inner ear.
cochlea
Vibrations move from the cochlea to the _______________ ___________.
auditory nerve
The __________ understands the messages as sound, and sound is heard.
brain