Page 57 - Science Course 3 (Book 2)

Mo10-L2b: How Does Light Interacts with Matter?

intensity
How Does Light Interacts with
Mo10–L2b
Matter? that amount of energy that passes
through a square meter of space in
KEY CONCEPTS: one second.
1. What are some ways in which light interacts with
matter?
2. How do your eyes change light waves into the
images you see?

Vocabulary A-Z
Let us learn some vocabulary

transparent Let’s Begin
a material that allows almost all of the light
striking it to pass through, and through which
objects can be seen clearly. Speed, Wavelength, and Frequency

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Light travels at a speed of 3 x 10 m/s.

When light enters a medium, it slows down due to
the interaction between the wave and the particles
that make up the matter.

translucent Speed of Light
Distance Traveled in 1 Second
a material that allows most of the light that strikes Vacuum 186,000 Miles
it to pass through, but through which objects
appear blurry.

Water 140,000 Miles

opaque
a material through which light does not pass.
Glass 124,000 Miles

Diamond 77,500 Miles

Transparent Opaque
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