Light travels as electric and magnetic waves and interacts with matter in different ways depending on the material. Materials can be transparent and allow most light to pass through, translucent and allow some light to pass through, or opaque where no light can pass through. Light travels extremely fast, taking only 8 minutes to travel from the sun over 90 million miles to earth, and it travels fastest in a vacuum compared to other mediums where its speed is slower. Light also travels in a straight line as it passes through or interacts with different materials and objects.

1. How does light travel
and interact with
matter?
Chapter 12: Lesson 3:

2. What is light made up of?
Electric waves Magnetic waves

3. Determine what is transparent, translucent
and opaque.

4. Types of materials
Transparent
Translucent
Opaque
Allow most light to
pass through them.
Allow some light to
pass through them.
No light can pass
through them.

5. Distance traveled by light from sun to earth
=90 million miles
Light travels at very high speed.

6. Light can travel through vacuum.
Speed of light in vacuum is faster than its
speed in solid, liquid or gas.

7. Light travels in a straight line.