Term
|
Definition
| Sound is produced when an object _____. |
|
|
Term
|
Definition
| _____-moves rapidly back and forth. |
|
|
Term
|
Definition
| _____ is a form of energy that is released when an object vibrates. |
|
|
Term
|
Definition
| Sound waves become _____ as they travel away from the source of the sound. |
|
|
Term
| cannot be heard it at all |
|
Definition
| Sound travels away from its source until it __________________. |
|
|
Term
| d.all three states of matter |
|
Definition
Sound waves travel through:
a.solids
b.liquids
c.gases
d.all three states of matter |
|
|
Term
|
Definition
| Sound waves travel rather _____ through gases, _____ through liquids, and _____through solids. |
|
|
Term
|
Definition
| Sound waves (can , cannot) travel through empty space. |
|
|
Term
|
Definition
| In 1660, the great English scientist _____________ proved that sound waves cannot travel through empty spaces. |
|
|
Term
|
Definition
| Sound usually travels through air at the speed of about ___________. |
|
|
Term
|
Definition
| Light travels at the speed of ____________. |
|
|
Term
|
Definition
| The _____is a boxlike chamber located in the air passage. |
|
|
Term
|
Definition
| Inside the larynx are two stretchy bands of tissue which are called the _______. |
|
|
Term
1.outer ear
2.middle ear
3.inner ear |
|
Definition
| The ear is divided into three main parts: (name them) |
|
|
Term
|
Definition
| Name the two parts of the outer ear. |
|
|
Term
|
Definition
| Seperating the outer ear from the middle ear is a thin membrane called the _____. |
|
|
Term
|
Definition
| Name the three small bones that are joined together behind the eardrum. |
|
|
Term
|
Definition
| Within the inner ear is the _____, a snail-shaped organ filled with liquid. |
|
|
Term
|
Definition
| Inside the _____is the actual organ of hearing. |
|
|
Term
|
Definition
| _______are the nerves that carry messages of sound to the brain. |
|
|
Term
|
Definition
| true or false - Not all mammals have auricles. |
|
|
Term
|
Definition
| _____are the only animals that have auricles. |
|
|
Term
|
Definition
| true or false - Moving the auricles in the direction of the sound helps the animal to hear sound more distinctly. |
|
|
Term
|
Definition
| When an object vibrates very rapidly, a large number of sound waves are produced each second. Such a sound is called a _____ sound. |
|
|
Term
|
Definition
| High-frequency sounds have a _____. |
|
|
Term
|
Definition
| _____is the highness or lowness of a sound. |
|
|
Term
|
Definition
| An object must vibrate _____for your ears to pick up the sound. |
|
|
Term
|
Definition
| _____ and _____ hear sounds that have a frequency of 120,000 vibrations per second. |
|
|
Term
|
Definition
| true or false - Dogs and cats can hear sounds of higher frequencies than bats and dolphins can. |
|
|
Term
|
Definition
| Materials with soft, uneven surfaces tend to _____ sound waves. |
|
|
Term
|
Definition
| Materials with hard, smooth surfaces tend to _____sound waves. |
|
|
Term
|
Definition
| When sound waves bounce back, they sometimes can be heard a second time. This reflected sound is called an _____. |
|
|
Term
|
Definition
| Sounds that are of frequencies too high to be heard by the human ear, scientist call them _______ waves. |
|
|
Term
|
Definition
| true or false - Bats "see" with their ears. |
|
|
Term
|
Definition
| Naval vessels use an ultrasonic device called _____ to determine the depth of the water beneath the ship and to locate objects such as icebergs, schools of fish, or submarines. |
|
|
Term
|
Definition
| _____ _____ invented the phonograph in 1877 that made preserving sound possible. |
|
|
Term
|
Definition
| __________ invented the telephone. |
|
|
