Properties of Light and Color Light travels in

Properties of Light and Color

Light travels in straight lines: Laser

Light travels much faster than sound. For example: 1) Thunder and lightning start at the same time, but we will see the lightning first. 2) When a starting pistol is fired we see the smoke first and then hear the bang.

Properties of Light When light strikes an object it is: 1) 2) 3) Reflected Transmitted Absorbed

Properties of Light What happens to the light depends on the material ◦ Transparent (clear) materials- transmit light ◦ Translucent (see through) materials- scatters the transmitted light ◦ Opaque (not see through) materials- absorbs and reflects

Properties of Light Color of objects is the color it reflects ◦ Ex- an orange is orange because it absorbs every color BUT orange, instead it reflects orange ◦ If you do not shine orange light on it, it will appear black

Properties of Light Color of objects is the color it reflects ◦ Ex- an orange is orange because it absorbs every color BUT orange, instead it reflects orange ◦ If you do not shine orange light on it, it will appear black ◦ Black is the absence of color, white is the blending of all colors

Properties of Light Reflection- when an object or wave bounces back off a surface

Lenses

Lenses

Lenses

Properties of Light Refraction- bending of light waves due to a change in speed

All colors of light combine to form… A. Brown light B. Grey light C. Black light D. White light

What happens when light passes from Air to water? A. The light speeds up B. The light slows down C. The light continues at the same speed D. The light forms a mirage

What type of lens is this?

What type of lens is this?

Refraction occurs when a wave A. Enters a new medium at an angle B. Hits a surface through which it cannot pass C. Moves around a barrier D. Interferes with another wave

Why do you see lightning before you hear thunder? A. The thunder is produced after the lightning B. Your eyes react faster than your ears C. Light travels faster than sound D. Sound travels faster than light