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