Page 58 - Science Course 3 (Book 2)

Mo10-L2b: How Does Light Interacts with Matter?

The wavelength and the frequency of a light wave When light ref ects from a smooth surface, the
determines the color of the light. ref ected rays are parallel and the ref ection of an
object looks the same as the object, except that is
Reds have the longest wavelengths and lowest reversed.
frequencies of light.

Violet colors have the shortest wavelengths and
highest frequencies of visible light.

Visible Light – Wavelength

RED
Light ref ects from a bumpy surface in different
ORANGE directions, and no clear ref ected image forms.

YELLOW

GREEN

BLUE

INDIGO

VIOLET

Color

The colors of objects you see depend on the wave-
Light and Matter Interact lengths of light that enter your eye.
The color of an opaque object is the color it ref ects.
A material that allows almost all the light that strikes
it to pass through and forms a clear image is
transparent. The color of a transparent or translucent object is
the color it transmits.
A material that allows most of the light that strikes it
to pass through but forms a blurry image is White Light
translucent.
All colors
A material through which light does not pass is are ref ected
opaque.
Red Light

Red color is
ref ected

White Light

No color is
ref ected
Green Light
Transparent Translucent Opaque
Green color
is ref ected

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