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What will light do in the following 3 situations?
Created by KBuckner for Fried or Slide PBL 2010
Light travels in a straight line
But when it hits an object it can do 1 of 3 things….it can
1) be reflected
Created by KBuckner for Fried or Slide PBL 2010
Light travels in a straight line
But when it hits an object it can
2) be transmitted(pass through)
Created by KBuckner for Fried or Slide PBL 2010
Light travels in a straight line
But when it hits an object it can
3) be absorbed
Created by KBuckner for Fried or Slide PBL 2010
Absorption
Absorption is the disappearance of an EM wave into the medium
Absorption can cast shadows
Created by KBuckner for Fried or Slide PBL 2010
The 3 ways that light behaves
Created by KBuckner for Fried or Slide PBL 2010
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
Created by KBuckner for Fried or Slide PBL 2010
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
Created by KBuckner for Fried or Slide PBL 2010
OPAQUE
Opaque materials do not allow any light to pass through them
Construction paper,
Trees, Animals
Created by KBuckner for Fried or Slide PBL 2010
LET’S REVIEW
TRANSPARENT
TRANSLUCENT
OPAQUECreated by KBuckner for Fried or
Slide PBL 2010
This flask is ….
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
This lamp shade is…
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
This vase is ….
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
Aluminum Foil is…
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
Saran Wrap is ….
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
Wax paper is….
Created by KBuckner for Fried or Slide PBL 2010
These bulbs are ….
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
This rock is….
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
The water in the fish tank is …..
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
Tissues are…
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
Notebook Paper is…
Transparent
Translucent
Opaque
Created by KBuckner for Fried or Slide PBL 2010
