Type
Crossword
Description

The colour that has the longest wavelength Red
The colour that has the shortest wavelength Violet
A clear piece of glass that bends light Prism
Formed when light bounces off smooth, flat surfaces Reflection
The distance light travels in a year Light-year
Nothing moves faster than this Light
An object is described as this if you can see through it Transparent
We see this when light hits an opaque object Shadow
An object is described as this if you cannot see through it Opaque
Describes an object that allows some light to pass through it Translucent
Light does this when it passes through transparent materials (another word for bend) refracts

Mirrors and Lenses Crossword

Type
Crossword
Description

We use this to see our reflection. mirrors
Light from us bounces off of a mirror to show us how we look reflection
Our eyes go through this process to give us sight refraction
if we look at a table and cannot see through it, the table is _____. opaque
This object uses different lenses to magnify and enhance the apperance of an object we are observing. microscope
This either refracts, reflects, or absorbs light to change the way we view objects. lense
Most windows are ______, because we can see through them and they absorb a little light. Transparent
tranfers impulse to the brain for sight Optic Nerves
Where a wave moves apart Rarefaction
A sensitive membrane at the back of the inside of an eye retina
An outward-curved lens convex
______ makes things visible light
An inward-curved lens concave
A ______ regulates the amount of light entering the eye pupil
The ______ focuses light waves on the retina focal point
The ______ refract light entering the eye and sends it to the back of the eye cornea
The act of seeing sight
This device uses highly concentrated light laser
transmission of some light but can cause it to disort translucent
Able to be seen visible
An optical tool that uses refraction to seperate different wavelengths that make up white light prism

Science - Light & Sound Crossword

Type
Crossword
Description

the bouncing of light off an object REFLECTION
the bending of the path of light when it moves from one kind of matter to another REFRACTION
the stopping of light when it his a wall or other opaque ABSORBTION
reflecting or absorbing all light; no image can be seen OPAQUE
allowing some light to pass through; blurry image can be seen TRANSLUCENT
allows most light to pass through; clear image can be seen TRANSPARENT
a solid object that bends light; not a lens PRISM
the range of light energy that people can see VISIBLE SPECTRUM
a vibration you can hear SOUND
the area of a sound wave where the air is pushed together COMPRESSION
quickly moving areas of high and low pressure SOUND WAVE
the greatest distance from the top of a sound wave to the bottom of the wave, the more energy a wave carries, the greater the amplitude AMPLITUDE
the distance in a straight line from one place on a ripple to the same place on the next ripple WAVELENGTH
the measure of the amount of sound energy reaching your ears LOUDNESS
the measure of how high or low the sound is PITCH
the speed t which a sound travels SPEED OF SOUND
a sound reflection ECHO
a large, quick air pressure increase followed by a large quick decrease, an object moving faster than the speed of sound does this, so we hear a large BOOM when it happens SONIC BOOM
the change in frequency & pitch as a source of sound waves moving towards you or away you DOPPLER EFFECT
the part of a sound wave where molecules are spread apart RAREFACTION
the part of the sound wave where the molecules are close together COMPRESSION
the number of times an object vibrates per second FREQUENCY
a unit for measuring loudness DECIBEL

Lights and Shadows Crossword

Type
Crossword
Description

to glow or to give off light at low temperatures, as in fireflies Luminescent
a material that does not let any light pass through Opaque
nature's display of the spectrum of colours produced by the dispersion of colours as light passes through droplets of water falling through the sky during a rainstorm Rainbow
to bounce off a surface, as in light bouncing off a mirror. Reflect
the bending of a light ray as it passes from one medium to another Refraction
a dark image or figure cast on the ground or some surface by an object blocking incoming light Shadow
a material that allows some light to pass through but scatters the light in the process so that images are not clear (i.e. frosted glass) Translucent
a material that lets light pass through it so that objects can be seen clearly on the other side Transparent
a three-sided length of glass. Light passing through it is refracted separating the colour of white light into a spectrum of colours. Prism
a form of energy that is emitted by the sun or by a chemical reaction to which the eye is sensitive. Light

Different Lenses Crossword

Type
Crossword
Description

curved surface that bends light by refraction lens
diverging lens convex
converging lens concave
point which all incident rays pass through focal point
light strikes a surface and comes back at a different angle reflection
bending of light rays refraction
path of a light ray optical axis
light striking a non-shiny surface diffuse reflection
a dispersive object prism
distance between object and ooptical element object distance
a lens to see outerspace telescope
a mirror or shiny surface creates this specular reflection
window glass transparent
frosted glass translucent
painted glass opaque
angle between incident ray and normal angle of incidence
angle between reflected light and normal angle of reflection
the angle of incidence equals the angle of reflection law of reflection
an illusion created by light image
distance between the lens and focal point focal length

Waves Crossword

Type
Crossword
Description

occurs when a wave bounces back after striking an object reflection
the point on the axis of a mirror lens throughwhich all incident light rays are focused focal point
maximum distance the wave vibrates from the rest position amplitude
the distance between the adjacent crests or compressions in a series of waves wavelength
result of more moves overlapping interference
curved transparent object that forms an image by refracting light lense
any disturbance that transmits energy through matter or space wave
bending waves around a barrier or through an opening diffraction
image through which light does not actually pass virtualimage
image through which light passes realimage
lens that is thicker in the middle than the edges convexlense
speed at whcih a wave travels wavespeed
the distance between a mirror lense through which all incident parallel rays are focused focallength
mirror that is curved outward convexmirror
mirror that is curved inward concavemirror
mirror with a flat surface planemirror
matter through which visible light is easily transmitted transparent
matter that transmits light but also scatters the light as it passes through matter translucent
number of waves produced in a given amount of time frequency
wave that forms from a stationary pattern in which portions of the waveare at rest position standingwave

Optics Crossword

Type
Crossword
Description

A type of optical telescope that uses a lens as its objective to form an image. refracting
Is an optical telescope which uses curved mirrors that reflect light and form an image. reflecting
The _____lens in a telescope focuses the light to a point in front of the eyepiece. objective
Another word for nearsightedness myopia
Images are formed behind the retina, not on it, and this causes close-up images to be blurry. hyperopia
The most common cause of blindness cataracts
The pupil gets____in bright light. smaller
The aqueous humour is the ____fluid, that fills the front part of the eyeball. clear
The ___ spot is where the optic nerve leaves the retina. blind
The coloured part of the eye. iris
The _____body is a circular muscle that enables the lens to change shape for focusing. ciliary
The _____is a layer of blood vessels that nourishes the eye. choroid
With refraction of light no image is formed when the object is at the_____point. focal
A lens that makes light rays come together is called a _____lens. convex
These lenses make light spread apart. concave
A _____and dark-coloured surface will absorb light the most. rough
Concave mirrors are also called _________mirrors converging
Your image will be upright, but much smaller than what you normally see in this kind of mirror. plane
The ability to let light rays in. transparent
Light can partially get through.. translucent
Allows no light to get through. Opaque
,Light can travel in a straight line just like _____. waves
When the sunlight passes from the air through rain droplets before reaching your eyes, what is this called? dispersion
Different _______of light have different wavelengths. colours
Where does the energy of the electromagnetic spectrum come from? sun
,As the wavelength gets shorter, both the frequency and energy _______. increase
Which rays are the highest forms of electromagnetic radiation? gamma
Waves where the particles of the medium vibrate with an up and down motion. transverse
What is the branch of science called that deals with the study of waves that travel through the Earth? seismology
What kind of wave can you see on the water on a windy day? surface

Heat, Light, Sound Review Crossword

Type
Crossword
Description

the transfer of heat energy through objects that are touching conduction
a material that waves travel through (solid, liquid, gas) medium
transfer of heat without matter to carry it (waves) radiation
a material that lets some light through translucent
the angle light hits the surface (angle of _______) incidence
volume is determined by______ amplitude
scattering of light diffusion
_______ creates sound vibration
transfers heat well conductor
transfer of heat through currents convection
material that blocks all light opaque
color that absorbs all light black
the bending of light when it hits a new medium refraction
refracts light to see colors separately prism
a combination of all colors spectrum
wavelength determines the __________ pitch
the number of times a wave occurs in a second frequency
red, blue, and green are the _________ colors primary

Light Crossword

Type
Crossword
Description

Light travels fastest in this. Vacuum
Light slows down when it goes through a denser object. refraction
The angle of ____________is the same as the angle of refelction. incidence
An object that creates light. luminous
Used to create rays of light to investigate reflection and refraciton. raybox
The unit of measurment of the speed of light __________ per second. metres
The type wave that light travels in. transverse
Used by people to detect light. eyes
Focuses light in the eye. lens
A dark area caused by an object blocking light. shadow
The imaginary line at right angles to the mirror. normal
The shape of a lens used to focus light to a point. convex
Lets all light through. transparent
Lets some light through. translucent

Light & Sound Word Search

Type
Word Search
Description

luminous
frequency
spectrum
prism
anvil
opaque
transparent
green
reflection
vibrations
medium
red
oscilloscope
yellow
vacuum
refraction
density
dispersion
translucent
amplitude
blue
cochlea
pitch
pinna
mirror
normal
incidence
shadow
periscope

Light and Sound Crossword

Type
Crossword
Description

Energy in the form of vibrations passing through matter is Sound
How high or low a sound is pitch
This is a fast consistent movement back and forth vibration
Sound travels through what? waves
This material only lets some light pass through translucent
This material lets all light pass through it transparent
An example of an artificial material is flashlight
This produces its own light Sun
This material lets no light pass through it opaque
When let bends from passing through a new medium refraction
When let bounces off, or reflects from a surface reflection
When an object takes in a light wave absorption
This travels faster than sound light