What will light do in the following 3 situations?
Light travels in a straight line
But when it hits an object it can do 1 of 3 things….it can…
1) be reflected
Light travels in a straight line
But when it hits an object it can…
2) be transmitted
(pass through)
Light travels in a straight line
But when it hits an object it can…
3) be absorbed
Absorption
Absorption is the disappearance of an EM wave into the medium
Absorption can cast shadows
The 3 ways that light behaves
Light waves interact with materials
Light can be reflected, transmitted, or
absorbed…but why?
It depends on whether the object is transparent, translucent or opaque
Transparent
Transparent materials allow light to pass through so that objects behind can be clearly seen.
Glass windows, glass doors, fish tanks, water, saran wrap
Translucent
Translucent materials transmit some light but cause it to spread in all directions
You can see light through these materials but not clearly
Lampshades, frosted glass, sheer fabrics, notebook paper
Opaque materials do not allow any light to pass through them
Construction paper,
Trees, Animals, Footballs
Opaque
LET’S REVIEW
TRANSPARENT
TRANSLUCENT
OPAQUE
This science flask is ….
Transparent
Translucent
Opaque
This lamp shade is…
Transparent
Translucent
Opaque
This vase is ….
Transparent
Translucent
Opaque
Aluminum Foil is…
Transparent
Translucent
Opaque
Saran Wrap is ….
Transparent
Translucent
Opaque
Wax paper is….
Transparent
Translucent
Opaque
This rock is….
Transparent
Translucent
Opaque
The water in the fish tank is …..
Transparent
Translucent
Opaque
Tissues are…
Transparent
Translucent
Opaque
Notebook Paper is…
Transparent
Translucent
Opaque