Unit 3: Waves and Light Lesson 4: Interactions of Light

• How does matter transmit light?1. Transparent: mediums that allow light to

completely travel through it; for example-glass, water, and air

2. Translucent: mediums that allow some light to pass through in many different directions; for example-frosted glass, shaded lamps and tissue paper

Unit 3: Waves and Light Lesson 4: Interactions of Light

• What kind of matter can light absorb?1. Opaque: does not let any light pass

through causing light to either be reflected or absorbed; for example-wood, metal, brick, dark colored clothing

Unit 3: Waves and Light Lesson 4: Interactions of Light

• We see specific colors when an object reflects that specific color and is reflected into our eyes. (opaque)

• When an object reflects every color, the object appears white.

• When an object absorbs every color, the object appears black.

• When it comes to transparent or translucent objects we see the color being absorbed rather than the color being reflected.

Unit 3: Waves and Light Lesson 4: Interactions of Light

• How does a medium affect the speed of light waves?

• What wave interaction influences the direction of light?

• How does the direction of light change with refraction?