Term
|
Definition
| a wave transfers energy from one place to another |
|
|
Term
|
Definition
| vibrations of particles (atom or molecule) of a material / medium |
|
|
Term
| what does sound need to travel through? |
|
Definition
|
|
Term
| what is the amplitude of a sound wave? |
|
Definition
| the height from the centre of a wave to its peak or trough |
|
|
Term
| what is the wavelength of a sound wave? |
|
Definition
| distance from one peak to another (or one trough to another) |
|
|
Term
| what effect does changing amplitude have on a sound? |
|
Definition
| changes the volume of the sound |
|
|
Term
| what effect does changing wavelength have on a sound? |
|
Definition
|
|
Term
| what kind of sound will a high amplitude wave make? |
|
Definition
|
|
Term
| what kind of sound will a short wavelength wave make? |
|
Definition
|
|
Term
| what kind of sound will a low amplitude wave make |
|
Definition
|
|
Term
| what kind of sound will a long wavelength wave make? |
|
Definition
|
|
Term
| how do musical instruments change their pitch? |
|
Definition
| by changing the length of the part that vibrates to make the sound |
|
|
Term
| what effect does age have on your range of hearing? |
|
Definition
| the younger you are the higher the pitch you can hear |
|
|
Term
| what unit is the volume of sound measured in? |
|
Definition
|
|
Term
| what is the function of the ear flap? |
|
Definition
|
|
Term
| what is the function of the ear canal? |
|
Definition
| channels sound waves into the ear |
|
|
Term
| what is the function of the ear drum |
|
Definition
| vibrates when sound waves hit it |
|
|
Term
| what is the function of the three small bones? |
|
Definition
| pass the vibrations from the ear drum to the cochlea |
|
|
Term
| what is the function of the cochlea? |
|
Definition
| turns the vibrations into electrical signals |
|
|
Term
| what is the function of the auditory nerve? |
|
Definition
| sends electrical signals to the brain |
|
|
Term
| what is the function of the semi-circular canals? |
|
Definition
|
|
Term
| what are ultrasound waves? |
|
Definition
| sound waves that have a frequency above human hearing range (over 20,000 Hz ) |
|
|
Term
| how is ultrasound used in pregnancy? |
|
Definition
| to get an image of an unborn baby |
|
|
Term
| how is ultrasound used is physiotherapy? |
|
Definition
| treat muscle strains and ligament sprains |
|
|
Term
| how is ultrasound used in the treatment of kidney stones? |
|
Definition
|
|
Term
| what do bats use ultra sound for? |
|
Definition
|
|
