Light waves interact with materials Light can be reflected, transmitted, or absorbed Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 TRANSMISSION Transmission is the passage of an EM wave through a medium If light reflected by objects did not pass through air, windows, or most of the eye, we would not be able to see objects Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Absorption Absorption is the disappearance of an EM wave into the medium Absorption affects the way things look Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Watch this clip to learn about transparent, translucent, and opaque objects. Created by KBuckner for Fried or Slide PBL 2010

How materials transmit light Transparent materials allow most of the light that strikes them to pass through It is possible to see objects through a transparent material Air, water, clear glass Created by KBuckner for Fried or Slide PBL 2010

CAN YOU NAME SOME TRANSPARENT OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

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 no clearly Lampshades, frosted glass, sheer fabrics, notebook paper Created by KBuckner for Fried or Slide PBL 2010

CAN YOU NAME SOME TRANSLUCENT OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 OPAQUE Opaque materials do not allow any light to pass through them Heavy fabrics, construction paper, ceramic mugs Created by KBuckner for Fried or Slide PBL 2010

CAN YOU NAME SOME OPAQUE OBJECTS? Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 LET’S REVIEW TRANSPARENT TRANSLUCENT OPAQUE Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Let’s Play a Game!! Rules: If the ball is tossed to you, answer the question that appears on the slide. *If you get the question right, toss the ball to a friend. *If you get the question wrong, toss the ball to your teacher. GOOD LUCK! Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 This flask is …. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

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

Created by KBuckner for Fried or Slide PBL 2010 This vase is …. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Aluminum Foil is… Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 This greenhouse is …. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 This wall is …. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 This rock is…. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 A magnifying glass is ….. Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Tissues are… Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010

Created by KBuckner for Fried or Slide PBL 2010 Notebook Paper is… Transparent Translucent Opaque Created by KBuckner for Fried or Slide PBL 2010