Page 84 - Science Course 3 (Book 2)

Mo10-L5b: Interaction of Light Waves with Matter

A light ray is a narrow beam of light that travels in a Interaction of Light Waves with
straight line Mo10–L5b
Matter?

KEY CONCEPTS:
1. What happens to light waves when they interact
with matter?

Vocabulary A-Z

Let us learn some vocabulary

Unless light rays come in contact with a surface
or pass through a different material, they travel in transparent
straight lines.
a material that
allows almost all
of the light striking
it to pass through,
and through which
objects can be seen
clearly.

In order to see an object that is not a light source, translucent
light waves must ref ect from an object and enter
your eyes. a material that
allows most of the
light that strikes it
to pass through, but
through which
objects appear
blurry.

SUMMARY
How are Light Waves Different From Sounds
Waves?
An object is seen when light waves emitted opaque
by the object or ref ected by the object enter
the eye. a material through
which light does not
pass through.

The electromagnetic spectrum includes
electromagnetic waves of different
wavelengths, such as X-rays.

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