Show:
ROY
G.
B
I
V
100
Absorb means what?
What is to take in
100
Reflect means what?
What is to bounce off a surface
100
Name the colors of the visible spectrum
What is Red Orange Yellow Green Blue Indigo Violet
100
A prism is what? BONUS: What does it help us do?
What is solid, transparent object that refracts light that passes through it. BONUS: Separates the light into the colors of the visible spectrum
100
An illuminated object is what?
What is an object that reflects light that strikes it
200
Give an example of an opaque object.
Coffee mug
200
Give an example of a transparent object
A window
200
Give an example of a translucent object.
Frosted glass
200
Explain how a shirt looks green.
The shirt is absorbing every color except green. Green is reflecting off the shirt.
200
Describe what you did in the lab labeled Refraction, where you used broken pencils to observe how the picture changed.
....answers will vary
300
Why do we see the color black?
The object that is black is absorbing every color of the visible spectrum.
300
Why do we see the color white?
The object is reflecting every color of the visible spectrum and is absorbing none.
300
The word luminous means what?
Giving off its own light.
300
List three things that can happen when light hits an object. BONUS: Describe each of those concepts.
What is can reflect, refract, or absorb. BONUS: An object is reflected when light striking some surfaces bounces back; happens best from smooth, shiny surfaces like water or mirror. Refraction happens when light bends because of the angle at which part of the wave hits an object. Speeding up/slowing down. Absorption happens when light is taken in by the object. Object then takes in heat, example dark clothing.
300
Why do we see mirages?
Mirages happen when light bends as it passes through air of different temperatures. The dark road heats up from sunlight hitting it. The road heats the air just above it (cooler though).
400
What is a wavelength? How can I tell which ones are harmful or not?
Wavelength is the distance from one wave crest to the next. The crest is the peak, and the valley is the trough. Longer wavelengths, like microwaves are harmless. Shorter wavelengths like gamma rays or UVrays are harmful and should be used in small amounts.
400
Give an example of a high energy wave and tell whether it is harmful or not.
What is Xray, harmful.
400
Describe how the primary colors can produce white light.
Primary colors produce white light when red, blue, and green light mix together. Since white light is made up of all colors of the visible spectrum, the red, blue, and green light overlap with each other to form the other colors of the spectrum.
400
Give an example of a low energy wave and tell whether it is harmful or not.
What is radio waves, not harmful
400
What does it mean to be translucent?
Lets some light, but not all, through object.
500
What does it mean to be transparent?
What is letting light pass through easily.
500
What does it mean to be opaque?
What is blocking light.
500
What is another name for light waves?
What is electromagnetic waves.
500
What is a wave?
A rhythmic pattern that carries energy.
500
Explain the difference between a concave lens and a convex lens.
Concave: lens that is thinner in the center and thicker at edges Convex: lens that is thicker in the center and thinner at edges (football) Convex lenses make focal pt behind lens