Refraction Basics
What happens to light when it passes through air into water?
it bends or changes directions
what happens to an object when you look at it through a glass of water?
it appears displaced or distorted
how do glasses and contact lenses correct Vision?
Refraction /they bend the light coming into the eyes to meet the retina/ it bends the light to meet the right area of the eye
what is the name of the process where light bounces back from a surface?
Reflection
A concave lens
what does light do when moving between mediums to cause it to bend?
It slows down
when light speeds up which direction does it move when compared to the normal? ( towards or away from)
what optical illusion happens when a road appears wet on a hot day due to refraction?
a mirage
while reflection occurs on a surface, what does light pass through to cause refraction?
2 different media/ the boundary between 2 media
what lens bends light to fix farsightedness?
a convex lens
Refraction
why do fish seem to be in a different position than where they really are when looking from above water?
the light bends/refracts and produces an image which is displaced
what is the name of the instrument which uses refraction to view far away objects in the sky?
a telescope
the angle of incidence
what is the name of the condition where images are focused behind the retina of the eye which leads to you not being able to see things close up?
farsightedness
what is the name of the form of refraction which causes light to seperate into its seperate colours?
dispersion
when light enters a denser medium what direction does the light bend in relation to the normal line? ( away from or towards)
the bending of light by a glass lens to focus light or increase the size of objects is caused by what item?
A Magnifying glass
when light moves into water into air and bends a process occurs. What is this process?
Refraction / the bending of light
what is the part of the eye which receives the light before sending it as a signal to the brain?
The retina
what is the name of the line drawn perpendicular to the boundary between 2 media? ( hint the line is also found in diagrams of reflection)
the normal line
a rainbow
what item refracts light to help drivers see the road better in the night or in dark conditions?
Headlights/ High beams
the law of reflection
What is the pupil?
the black hole in the middle of the eye where light passes through