Type
Crossword
Description

Light is a form of ___________. energy
When the moon passes between the sun and the Earth, a _______ eclipse happens. solar
The bouncing of light rays off a surface is called ______________. reflection
The laws of reflection states that the angle of incidence is _________ to the angle of reflection. equal
_____________ is the bending of light as it travels from one medium to another of a different optical density. refraction
The refracted ray bends towards the normal when moving into a ____ dense medium. more
The refracted ray bends away from the normal when moving into a ____ dense medium. less
The splitting of white light into a spectrum of seven colours is called ____________. dispersion
When a blue light is shined on a red dress, it appears ________. black
When a green light is shined on a yellow dress, it appears _______. green

Refraction and Lenses Crossword

Type
Crossword
Description

is an increase or decrease in size of an image produced by an optical system compared to the true size Magnification
a transparent refracting device that is thicker in the middle than at the edges concave lens
a transparent refracting device that is thinner in the middle than at the edges concave lens
the separation of light into its spectrum dispersion
concave on both sides biconcave
convex on both sides biconvex
light rays coming out of it come together at a point – they converge converging lens
causes a beam of parallel rays to diverge after refraction, as from a virtual image diverging lens
images that are formed in locations where light does not actually reach virtual image
an image that is located in the plane of convergence for the light rays real image
refracting and focusing light so that objects appear clearly contact lenses
distance of an object that is placed from the point of an incidence on the mirror object distance
distance from the point of incidence of the mirror to the image image distance
a convex lens that is used to make a magnified image of an object magnifying glass
bending of a wave when it enters a medium where its speed is different Refraction
can calculate the image distance for either real or virtual images and for either positive on negative lenses thin lens equation
point at where rays or waves meet after reflection or refraction focal point
a technique for generating an image by tracing the path of light ray tracing
angle of reflection equals the angle of incidence flat mirror
the distance between the lens and the image sensor when the subject is in focus focal length

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

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

Waves and Sound Crossword

Type
Crossword
Description

A means of transferring energy from one point to another wave
Particles on the wave vibrate perpendicular to the direction that the wave is moving transverse wave
Particles on these waves vibrate parallel to the direction that the wave is moving (through a series of compressions and rarefactions) longitudinal
Require a medium to travel through (Ex: water waves and sound waves)  mechanical
Do not require a medium (ex: light and radio waves) electromagnetic
The distance from a point on one wave to the identical point on the next wave (crest to crest) wavelength
The number of waves passing each second; it is measured in Hertz frequency
Maximum displacement of a wave from the rest position or the size of the wave or how large the wave is amplitude
Waves will bounce off barriers an angle equal to the angle they strike the barrier reflection
Bending of a wave as it passes at an angle into another medium refraction
Bending of waves around barriers (this occurs to a greater degree with longer waves such as sound) diffraction
Waves add as they meet Constructive
The waves partly or completely cancel as they pass destructive
Change in frequency is heard when the source of sound and the person receiving the sound are in relative motion doppler effect
material through which a wave travels medium
Unit of measurement for frequency hertz
a disturbance that travels through a medium as a longitudinal wave sound
perception of the frequency of sound pitch
The high point of a wave. crest
The low point of a wave trough

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

The Sun-Earth-Moon System Crossword

Type
Crossword
Description

imaginary vertical line that cuts through the center of Earth around which Earth spins Axis
a round, three-dimensional object whose surface is the same distance from its center at all points SPhere
Earth's yearlong elliptical orbit around the Sun revolution
occurs when the Moon pauses directly between the Sun and Earth and cast a shawdow over part of Earth solar eclipse
change in appearance of the Moon as viewed from the Earth moon phase
moon phase that occurs when the Moon is between Earth and the Sun new moon
curved path followed by a satellite as it revolves around an onject orbit
describes phase that occur after a full moon as the visible lighted side of the Moon grows smaller waning
phase that occurs when all of the Moon's surface facing Earth reflects light. full moon
describes phase following a new moon, as more of the Moon's lighted side becomes visible waxing
twice-yearly point at which the Sun reaches its greatest distance north or south of the equator solstice
occurs when Earth's shawdow falls on the Moon lunar eclipse
move or cause to move into a sloping position tilt
spinning of Earth on its imaginary axis rotation
twice-yearly time-each spring and fall-when the Sun is directly over the equator and the number of daylight and nighttime hours are equal worldwide equinox
the partial or total blocking of light of one celestial object by another eclipse
the sun shines directly on the plant with no other plants, trees, or structures interfering with the sunlight direct sunlight
sunlight that reaches the Earth’s surface after being dispersed in the atmosphere over haze, dust and clouds indirect sunlight

Wave Behavior Crossword Puzzle

Type
Crossword
Description

What type of reflection happens when light hits a smooth surface? Regular
Light __________ when it bends as it passes through a medium. refracts
The more ________ an object is, the less light it will absorb. Transparent
_________ happens when photons from light hit atoms which then causes them to vibrate. Absorption
________ happens when waves spread around an obstacle. Diffraction
What type of reflection happens when rays of light hit an uneven surface? Diffused
What is it called when light hits an object and bounces off it in all directions? Scatter
When light moves from air to water, it ___________ down. Slows
Sound waves can't travel through a vacuum because of a lack of ______ molecules. air
The bigger the wave length is in a wave, the smaller the _________ is. Frequency

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

Reflection and Refraction Word Search

Type
Word Search
Description

ray
dull
shiny
transmit
absorb
scattered
light energy
energy
solar panel
prism
surface
mirror
lens
color spectrum
bend
medium
refraction
refract
reflection
reflect

Seasons Crossword

Type
Crossword
Description

a round solid figure, or its surface, with every point on its surface equidistant from its center. sphere
an imaginary line about which a body rotates. axis
the action of rotating around an axis or center. rotation
an instance of revolving. revolution
an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination eclipse
when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days. solstice
the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20). equinox
the shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth. moon phase
the phase of the moon when it is in conjunction with the sun and invisible from earth, or shortly thereafter when it appears as a slender crescent. new moon
(of the moon between new and full) have a progressively larger part of its visible surface illuminated, increasing its apparent size. waxing
the phase of the moon in which its whole disk is illuminated. full moon
"shrinking" or decreasing in illumination. waning
an eclipse in which the sun is obscured by the moon. solar eclipse
an eclipse in which the moon appears darkened as it passes into the earth's shadow. lunar eclipse
the angle between an object's rotational axis and its orbital axis, or, equivalently, the angle between its equatorial plane and orbital plane. tilt
Diffused light, as opposed to the direct rays of the sun indirect sunlight
the sun shines directly direct sunlight
the path followed by an object revolving around another object, under the influence of gravitation (see satellite). orbit