1. Write the statement. If it is true leave it
alone, if it is false change it to make it
true.
 Optics is the study of all forms of light
and tools that use light.
 A flat mirror produces an upside-down
image.
 The angle formed by light striking a
mirror is always less than the angle of
reflection.

3.  Refraction is the bending of light that takes
place at a boundary between two mediums.
 Refraction is caused by a change in the
speed of light as it passes from one medium
to another.

4.  Rainbows are caused by refraction.
 The raindrops act like a prism and refract light,
then reflect light off each other.

5. A lens is a clear optical tool that refracts
light.
 Different types of lenses refract light in different
ways

6.  Parallellight rays pass through the lens and
are refracted outward.
 Light rays closest to the edges are refracted the
most.
 Light rays that pass through the center are not
refracted at all because they pass through at the
focal point

7.  Parallel
light rays that pass through a
concave lens are refracted outward
 Light rays closest to the edges are refracted the
most.
 Light rays that pass through the center are not
refracted
 Light ray are deflected away from each other
and do not meet

8.  Focallength- the distance from the center
of the lens to the lens’s focal length.

9.  http://www.youtube.com/watch?
v=FaOTEsaEVME