Show:
light and matter
reflection and refraction
using mirror to form image
using lens to form image
100
what is a tranlucent object?
an object that let some of the light transmit, and is scattered in all direction
100
what is the angle of reflection if the angle of incidence is 70 degrees?
70 degrees
100
how is the size of actual object compare to a mirror image in a convex mirror?
mirror image is smaller than actual object
100
what is a convex lens?
thicker in the middle than the edge
200
name two objects that are transparent
clear glass, water
200
what is normal?
an imaginary line that passes through both materials at a right angle.
200
what is the focal point?
where the light focus together
200
what type of imgae in formed by concave lens?
upright and smaller
300
what are the three ways light strikes?
transmitted, absorbed, and reflected
300
how does the angle of incidence relate to the angle of reflection?
angle of incidence= angle of reflection.
300
which mirror can make you look taller?
concave
300
does concave lens reflect light rays towards the normal or aways form the normal?
away
400
what would happen to light when it strikes an opaque object?
most of the light will be absorbed or reflected
400
what does (R) and (r) mean?
(R) angle of refraction, (r) angle of reflection
400
what do the three types of mirror have in common?
they all reflect light rays to form image
400
if the object is more than 2 focal lengths in front of the convex lens, what type of image in formed?
smaller and inverted
500
how is light described in the ray model of light?
light is described as a ray that travels in a straight path.
500
why cna you see urself in a plane mirror?
light bounces off a plane morror with a regular pattern
500
what is the difference between diverging and converging
converging is when light rays meet at a focal point. diverging is when rays spread out in different direction
500
what is a focal length?
the distance from the center of the lens to the focal point