1.
Light Exploration
Write On
Grade

2.
Learner Expectation
 Content Standard: 14.0 Energy
 The student will investigate energy and
its uses.
 Learning Expectations:
 14.1 Know that energy exists in many
forms.
 14.2 Recognize the characteristics of
light energy and sound energy.

3.
In this activity you will:
 Observe that light passes through some
materials easily,some materials
partially, and some not at all.
 Classify materials according to the way
light passes through them.

4.
Materials and Light
 There are three different types of
materials that light will or will not pass
through.
 Transparent
 Translucent
 Opaque

5.
Transparent Light
 Materials that you can see through
allow almost all of the light to pass
through.
 Light is allowed through with very little
bending or scattering of the rays of light.

6.
Examples of Transparent
Materials
 Clear glass
 Clean water
 Clear plastic

7.
Question
 Why is transparent tape called
transparent tape?

8.
Answer
 You can see through it or light rays are
allowed to pass through it.
 I can completely see my leftovers
wrapped in transparent plastic wrap.

9.
Translucent Materials
 Materials that allow only some light to pass
through.
 Objects allow light to pass through, but they
scatter the rays so much that you cannot get
a clear view of what is on the other side.
 Examples of Translucent Materials
 Thin fabrics
 Frosted glass
 Thin paper

10.
Question
 Why is wax paper translucent?

11.
Answer
 You can see some light, but you cannot
see through it.
I can barely see my leftovers wrapped in
wax paper.

12.
Opaque Materials
Light cannot pass through these
materials.

13.
Examples of Opaque
Materials
 Brick
 Metal
 Thick paper
 Aluminum Foil
 Wood
 Stones

14.
Quick Facts about Opaque
Materials
 These objects will cast a shadow when
lit up.
 Brick, metal, and thick paper stop light
completely.
 This is why you cannot see your
leftovers wrapped in aluminum foil!

15.
Writing Activity
 Write a paragraph that includes a
definition and example of
transparent , translucent and
opaque light.