37 terms

Terms	Definitions
Mammals	The only animals that have visible outer ears.
Bats	What animal can "see" with its ears?
Absorb	Materials with soft, uneven surfaces tend to ______ sound waves.
Bats and Dolphins	What two animals hear the highest frequency sounds?
20 times per second	What is the lowest frequency that the human ear can hear?
High pitch	What kind of pitch does an object that vibrates very rapidly produce?
The auditory nerve	What nerve carries the message of sound to the brain?
Hammer, anvil, and stirrup	What three bones make up the middle ear?
Vocal Cords	Speech is produced by the vibrations of the _______.
Empty space	What can sound waves not travel through?
energy	Sound is a form of ________.
Solids	What state of matter do sound waves travel the fastest through?
Robert Boyle	Who proved that sound waves travel only through matter?
Thomas Edison	Who invented the phonograph?
Alexander Graham Bell	Who invented the telephone?
Echo	A reflected sound that is heard again
Cochlea	The snail shaped part of the ear that has liquid.
Sonar	What determines the depth of the water and locates objects in the sea?
They help you tell which direction a sound is coming from	Why are two ears better than one?
Mockingbird	Mimics other birds
Woodpecker	Uses its extra long tongue to probe holes in trees
Hummingbird	The tiny bird that can vibrate its wings 60 times per second
Starling	The spangled bird that came from Europe
Blue jay	The bossy bird that plants oak trees
Wren	Chubby, little bird that nests in unusual places
Chickadee	Cheerful bird that can hang upside down on a branch
Nuthatch	Bird that can walk headfirst down tree
Air and water	What two things are clouds made of?
Matter	Anything that takes up space and has weight.
Atoms	The particles that make up molecules.
Hydrogen and oxygen	What two gases are water made of?
32 degrees f.	What is the freezing point of water?
212 degrees f.	What is the boiling point of water?
pressure	Air exerts ______________.
Evaporation	The process by which liquid water becomes water vapor.
Condensation	The process by which water vapor turns back to liquid.
Parts of the ear.	Auricle, eardrum, auditory canal, anvil, stirrup, hammer, cochlea

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