Light reflection

Light reflection

What is a light wave?

• Tiny particles called photons moving very fast.

How are we able to see things?

• Light travels in a straight line to an object, bounces off, then travels back to the human eye. We can see!

Behavior of a light wave

• Travels in a straight line

• Travels very, very fast

Types of light

• Natural light: made from Earth

• Artificial light: made by man

Multiple Choice

How are we able to see?

• Light travels in a circular wave and disappears.

• Light travels in a straight line, reflects off an object, and enters the eyeball.

• Light travels through the object, circles it, then returns to the eyeball.

Open Ended

Name one type of natural light and one type of artificial light.

Properties of a light wave

• Reflection: light bounces off the object

• Refraction: bending of light - when the light moves from one medium to another (air to water)

• Transmitting: light goes through an object

• Absorbing: Light soaks into something

Multiple Select

What object below would cause light to reflect off of it?

• wall in your house

• a pillow

• a rug

• a mirror

Multiple Choice

Where would you see light refracting (bending)

• off a mirror

• a fishing pole line that enters the water

• a black t-shirt

Multiple Choice

I can see light transmit (go through) what object below?

• mirror

• window

• bed

Multiple Choice

What object may absorb (soak in) light?

• white t-shirt

• black t-shirt

• no t-shirt

How does light travel through objects?

• tranparent: all light travels through the object.

• translucent: some light travels through the object.

• opaque: no light travels through the object

Multiple Choice

Which object below is transparent?

• wooden table

• a window

• a shower curtain

• a wall

Multiple Choice

Which object below is translucent?

• wooden table

• a window

• a shower curtain

• a wall

Multiple Select

Which objects below are opaque? CHOOSE 2!!!!!

• wooden table

• a window

• a shower curtain

• a wall

How do sunglasses help us see?

• When light hits an object, the light reflects and enters our eyeballs.

• If the light that is reflected is super bright, we may have to close our eyes or shade our eyes.

• OR.... WEAR SUNGLASSES!!!