Pre-Activity Assessment Questions (With Answer Key)
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1Pre-Activity Assessment Questions
Answer Key
1. What is light? -
Answers will vary. Example common answers:
The reason why we see things.
An electromagnetic radiation that has frequency and amplitude.
8
Travelling very fast (3x10
m/s in vacuum).
2. Light has the following behaviors when it is interacting with a certain boundary. For each, draw an
example and use arrows to show how the light is behaving.
Answers will vary. Example answers:
Reflection -
The bouncing of light when it strikes a boundary
incident
between different media through which it cannot pass.
reflected
light
light
mirror
incident
Refraction -
The bending of light as it
light
passes from one medium to another.
refracted
light
Absorption -
A process in which light (energy) is transferred to a medium in which it is passing
through.
incident
light
some light is
absorbed by the
material
–
Transmission
When light passes through a material and is not absorbed by that material.
incident
transmitted
light
light
Scattering -
The dispersal of rays of light when the light is reflecting from an unsmooth surface.
3. What is the difference between transparent and invisible?
Transparent material allows light to pass through it so that objects behind can be directly seen but the
material itself is still visible to the naked eye. On the other hand, invisible material allows light to
pass through as well, but it is not visible to our eyes.
Make That Invisible! Activity—Pre-Activity Discussion Questions
Answer Key
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