All About Light

Why does the straw look bigger in the water?

Because water magnifies the size of an image.

Because light travels slower through the water than through the air.Our eyes see the image of the straw above the water quicker than We see the image of the straw below the water.

Why does this straw look disconnected?

Objects that let all light pass through are called…?

Transparent

Objects that let some light pass through are called…?

Translucent

Objects that allow no light to pass through are called…?

Opaque

Which picture shows best the path thatlight travels?

A

B

C

A: Light always travelsIn a straight line!

• What is Refraction?

• Refraction is when light is bent in different directions.

• Refracting light with a prism allows us to see the colours in the colour spectrum.

Why do we see rainbows?

We see light because sun light is refracted By the rain dropsin the sky.

What is Dispersion?

Dispersion is when light is scattered Out in all directions.

What are the two types of light sources?

Natural Artificial

Sun

firefly

lightening

flashlight

monitor

light bulb

What about the moon?

The moon is not luminous. It is not a source of light. We see the moon because the light from the sun is reflectingoff the surface of the moon.

Can you name each type of lens?

ConcaveConvex

Which lens makes anImage appear larger and closer?

Which lens makes anImage appear smaller and far away?

Convex LensConcave Lens

What is white light?

Light is actually made up of the 7 colors of the color spectrum.

What are the colors of the color spectrum?

RedOrange

Yellow

Green

Blue

Indigo

Violet

Why does this apple lookRed?

The apple appears red because itContains red pigment. When a lightSource hits the apple, the apple absorbsAll the colors in the color spectrum except For the red. That red light is reflectedBack to our eyes!