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Physics of Light
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True or False: UV-B causes premature wrinkles and goes deep into your skin.
False (It's UV-A)
Light passes through glass because the molecules vibrate & pass those vibrations to neighboring atoms through the substance. This is called:
 
Retransmission
 
Reflection
 
Absorption
When light interacts with GLASS, what 3 things can occur? (see p 10 in guidebook)
 
Retransmission, Absorption, Reflection
 
Melting, Breaking, Shining
 
Refracting, Running, Interfering
On a flat mirror, what is the "incoming" ray and the "outgoing" ray?
 
Incident, reflecting
 
Reflecting, incident
 
Long, short
 
Refracting, Disappearing
If a mirror or lens is not curved, it is called __________.
 
Flat
 
Convex
 
Concave
 
Frosted
What is interference?
 
When light rays try to reflect but run into each other
 
When someone gets in your way
 
When light blocks the path of a spaceship
 
When light rays try to refract but get lost in the medium
What is refraction?
 
Light is bent from its normal course but isn't reflected
 
Light is projected from a source but is not visible
 
Light is really pretty but too bright to look at
What happens to the electrons in an object when light reflects off of it? They...
 
fall down to original energy level, releasing light energy
 
suck energy from the air to return to their original levels
 
vibrate in the same spot which sends waves of light out
What is it called when light bounces off an object, causing us to be able to see it?
 
Reflection
 
Refraction
 
Interference
 
Projection
What happens to the electrons in an object when light hits it?
 
Electrons increase in energy and jump up energy levels
 
Electrons decrease in energy and fall down energy levels
 
Electrons get hyper and vibrate but don't move to new levels
List the 3 primary colors of pigment
 
Magenta, Yellow, Cyan
 
Violet, Red, Orange
 
Red, yellow, blue
 
Cyan, Pink, Indigo
List the 3 primary colors of light:
 
Red, Green, Blue
 
Cyan, Magenta, Yellow
 
Black, white, and gray
 
Red, yellow, blue
What makes a rainbow show all the colors?
 
Drops of water act as prisms
 
Dust particles act as refractors
 
Light wavelengths act as projectors
 
Unicorns act as a rainbow horse army
Why is the sky blue?
 
Smaller blue light waves scatter off gas and dust particles
 
Ice particles high in the atmosphere look blue- they're cold
 
Because God likes the color blue the best.
 
Ocean water reflects its blue color up to the atmosphere
Choose the best statement about how light affects our ability to see objects.
 
Light has to reflect off objects & physically enter our eyes
 
Light only flows directly from the sun into our eyes.
 
Light is merely an illusion; you are seeing brain impulses.
 
Light has to refract through glass first, then enter our eye
The _______________ wants everything to be the same and is surprised when everything is different
 
Physicist
 
Chemist
In Greek, the word “Physics” literally means
 
Nature
 
Forces and energy
 
Motion and matter
 
The study of movement


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