Light and Optical Systems: Topics 1-3 (p. 172-207) Crossword

A form of energy that you can see.
A type of energy transfer that does not require matter.
The natural light source of the Earth.
_______ light source (like a light bulb) is the opposite of a natural light source.
This is the first color in the ROYGBIV spectrum.
What is the last color in the ROYGBIV spectrum?
Where light comes from is call the light _________
_____________light sources are when an object is heated to such a high temperature that it emits visible light.
This is the little wire in a light bulb that glows when the light is on.
To change electrical energy into light energy (a 3 step process from p. 180), you must go through the middle step of ________ energy.
"Black lights", the ones that look purple and make neon colors shine brightly, is this type of light.
When ultraviolet light is absorbed by particles and produces visible light energy, this process is called? (p. 181)
___________ sources is when light energy is absorbed by certain matter and stored for a short period of time before being released as visible light.
Chemiluminescent sources of light rely on ____________ reactions to produce light.
___luminescent sources are living creatures that produce light with their bodies.
An object that produces light is called ________.
An object that does not produce its own light is called ___ luminous.
This is a type of flying insect that is bioluminescent. This is also the name of a TV show from the early 2000s.
How many watts are in a kilowatt? One___________
The ___ model of light talks about how light travels in straight lines.
A ray ___________ shows how light moves according to the ray model (p. 184)
This is a strange word that helps us remember the order of colors in the spectrum.
Something that allows light to pass through is called what?
Something that lets only some of the light through and scatters what light it does let through is called what?
Something that doesn't let any light through at all is called what?
Optical ________ are attributes of a material that interact with light. Examples are transparency, translucency and opacity.
Which type of light bulb is more energy efficient? Incandescent or fluorescent?
This is the word we use when describing light bouncing off of a smooth, often metallic surface. (hint: mirror)
The angle of _________ equals the angle of reflection.
This is the part of your Science textbook where you can look up the definitions of words
The ________ line is found equally between the incident ray and the reflected ray.
The Law of Reflection states that "the angle of reflection equals the _______ of incidence".
It is __________ to look directly into a bright light source like a laser or very bright bulb.
Is a mirror that magnifies the image concave or convex?
If the inside of a spoon is concave, the outside of the spoon is _______?
an imaginary flat suface used in diagrams showing the Law of Reflection is called a ______.
An image in a mirror that seems as though it is inside the mirror (but is not) is called a ______ image.
If a smooth surface reflects light uniformly, then a ______ surface reflects light randomly and in a scattered manner.
_________ is the bending of the path of light at the surface of two materials.
When looking at an object in water, refraction occurs and makes the object appear in a place that it should ____ appear.
If the angle of incidence increases, then the angle of refraction _________.
A light ______ is a round piece of glass with a metal bottom that contains a wire. When electricity passes through the wire light is produced.
Images of words that appear in a mirror are backwards or forwards?
This is the word for the picture reflected from a flat, polished surface.
What unit number is found on page 172 (called Light and Optical Systems)
This is the word we use to describe a lack of light (imagine being inside a box)
Luna is the name of this object in space, Earth's only lunar body.
This is the chemical element found in most fluorescent light bulbs. (hint, it is a toxic metal that is liquid at room temperature)
If you took all of the different colors of light and shone them on the same spot, what would that color be?
This is the second color in the ROYGBIV spectrum
What does the Y in ROYGBIV stand for?
What is the middle color in ROYGBIV?
On page 176, we read that "light from the sun is produced by nuclear ______ of hydrogen particles".
Satellites use ______ cells to power their electronic equipment. (p. 177)
You should ______ stare directly at an Ultraviolet light source. (p.181)
The surface of a lake can be so _______ it will act like a mirror and reflect light. (p.189)
On p. 195 of your testbook, what is the type of animal looking into its reflection in the mirror?
On p.196, we see that convex mirrors are useful ________ devices.
On p. 205, we learn that solar energy can be changed into ________ energy for homes, farms, and recreational vehicles.