Science

LIGHT

Check out the videos below:

Light
Light Absorption, Reflection, and Refraction

REFLECTION AND REFRACTION

Reflection happens when light bounces off an object instead of being soaked up.
Refraction happens when light bends as it passes from one material to another.


WHAT HAPPENS WHEN LIGHT SHINES ON A MATERIAL?

Transparent materials let light pass through them.

• clear glass, overhead transparency, water

Translucent materials let some, but not all light pass through them.

• waxed paper, stained glass, plastic bottle

Opaque materials block light from passing through them.

• wood, carpet, book

HOW DOES LIGHT TRAVEL?

Light travels in straight lines unless it meets something that makes it change direction.

WHAT EMITS OR REFLECTS LIGHT?

Things that emit light are light sources. Most things do not emit light but we see them because they reflect light.


TYPES OF LIGHT SOURCES

There are two types of light sources in the world around us:

Natural Light comes from nature
(sun, fire, fireflies...)

Artificial Light is man made
(light bulb, flashlight, television...)