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- 1. Multiple Choice
What are the two parts of electromagnetic waves?
changing electric and magnetic fields.
waves of sound
electric fields only
magnetic fields only.
tagsboland - 2. Multiple Choice
The electromagnetic spectrum is made of
visible light
ultraviolet light
sound waves
x-rays, radio waves, and microwaves
- 3. Multiple Choice
A _________ frequency mean more energy.
lower
higher
- 4. Multiple Choice
More energy means _______ danger to human cells.
more
less
- 5. Multiple Choice
Radio waves are safe for human.
True
False
- 6. Multiple Choice
Ultraviolet light has a __________ frequency and it is ________ dangerous to human cells.
higher, not at all
lower, possibly
higher, not at all
higher, possibly
- 7. Multiple Choice
Based on your observations of a prism, which of these statements are true?
When light travels through a prism, the light is separated by wavelength.
Humans see the different wavelengths of visible light as different colors.
The prism is being used to combine different colors of light.
The light bends when it enters the prism and again when it leaves the prism.
- 8. Multiple Choice
If visible light includes a range of colors, what determines our perception of the color of an object?
the colors the object reflects and absorbs
the size and shape of the object
the light that is available in the area
the texture of the object
- 9. Multiple Choice
Which of the following are reasons that light appears dimmer at increasing distances from a light source?
Light waves slow down as they travel through a medium.
The energy of a light wave is absorbed by the medium as the light travels through a medium.
Light waves spread over more area as a wave travels away from the light source.
The wavelength of a light wave increases as the wave travels away from the light source.
- 10. Multiple Choice
Speed of Light
Study the diagram. Which statements are true? Choose all that apply.
Light travels at the same speed in water, glass, and diamond.
Light travels the fastest in a vacuum compared to the other mediums.
Light can’t travel through any mediums at all.
Light travels slower in mediums than it does in a vacuum.
Light can travel with or without a medium.
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