Unit 4.4

wot does energy do in order for us to hear

wot happens to the sound waves

wot does the vibration of the sound wave do

where does the vibration then move to?

wot does the movement of the bones cause?

wot happens in the cochlea

wot r some reasons y ppl can have hearing disabilities

wot has helped ppl with seriously damaged inner-ear to hear

structure of human eye

define accommodation

wot happens to the accommodation as we get older

wots the scientific word for short-sightedness

wots the scientific word for long-sightedness

myopia

hyperopia

wot r bifocals n graded lens used for

y r they strongest at the bottom?

wot r contact lenses made of

wots another treatment instead of glasses n contact lenses