A
ACCELERATION - to become faster, to move or happen more quickly

AERODYNAMIC - designed to be resistant to fluids (gas or liquid)

AIR PRESSURE
- the force exerted by air upon an object


AIR RESISTANCE
- opposition to air


ALGEBRA - the science and art of numbers

AMPERE
- a unit for measuring the strength of an electric current


ANALYZE
- find out the essential features


APPLICATION
- act of using, use; refers to getting a technology that can be applied into society


APPLIED SCIENCE
- refers to science that has a practical use


ARCHITECTURE
- science or art of building; style of a building


ARTIFICIAL
- not natural


ASTIGMATISM
- defect in an eye or a lens that makes objects look indistinct or imperfect


ASTRONAUT
- a person who works in space; may have many different skills


ATOM
- particle of a chemical element


ATTRACT
- to draw towards itself by unseen force, a magnet attracts iron


ATOMIC FORCES
- attraction between atoms


AVIATION
- art or science of navigating aircraft


AXLE
- bar on which or with which a wheel turns

Astronaut
B
BALANCE - a weighing apparatus with two scales or pans hanging from a crossbar

BAR GRAPH
- a graph using barlike lines to explain the graph


BATTERY
- a set of two or more electric cells which produce electric current 


BEAKER
- container that has a spout (pouring lip) and an open top


BICONCAVE
- (of a lens) concave on both sides


BICONVEX
- (of a lens) convex on both sides


BICYCLE
- a two wheeled vehicle driven by pedals or gears


BILATERAL
- if 2 sides look like each other


BINOCULARS
- an instrument with lenses for both eyes, making distant objects seem nearer


BLIND
- not able to see


BOX
- a solid rectangle


BRAILLE
- system of writing and printing for blind people


BUILT
- made by putting materials together; applied to built environment as a world built by humans


BURNING
- the process of being burned by fire

Bicycle
C
CALCULUS - a branch of mathematics that deals with problems involving rates of variation

CAMERA
- an apparatus for taking pictures, movie pictures, or television pictures


CABOOSE
- small car on a freight train in which the trainmen can rest and sleep


CARRY
- to take from one place to another 


CATARACTS
- a disease of the eye that makes a person partly or entirely blind if not corrected


CENTIMETER
- one hundredth of a meter = .3937 inch


CENTRIFUGAL
- moving away from the center


CENTRIPETAL
- moving toward the center


CHANGE
- make different; become different; passing from one form or place to a different one 


CHARACTERISTICS
- marking off or distinguishing a certain person or thin from others; a special quality 
or feature


CHEMICAL
- a substance obtained by or used by chemical means.


CHINA
- a country in Asia


CHIP
- a small piece of circuitry that is used in many computers and other electronic devices


CIRCLE
- a round, 2 dimensional shape


CIRCUIT
- an apparatus with conductors through which electric current pass


CITY
- a large important town that manages its own affairs


CLOTH
- woven or felted material


CLUB
- clover shaped


COACH
- a passenger car of a railroad train


COHERENT
- to stick together, to remain united in mass


COMMUNICATION
- giving information or news by speaking or writing; passage, means of going from one to the other


COMPARE
- to estimate the similarity between two things


COMPASS
- a device with a needle that points to the magnetic north


COMPOUND MACHINES
- machines that consist of two or more simple machines combined to work as one


COMPUTER
- a machine that can perform logical calculations


CONCAVE
- curving like the surface of a ball as seen from the inside


CONCEPTUAL
- understanding the overall principles 


CONCLUSION
- summary of results


CONDUCTOR
- a substance that conducts heat or electricity


CONES
- a solid body that narrows to a point from a round flat base


CONSUMER
- a person uses foods, clothes, or any other item 


CONVEX
- curving like the surface of a ball as seen from the outside


CORNEA
- the tough transparent outer covering of the eyeball


CORNER
- the angle or area where two lines or sides meet or where two streets join


CREATIVE
- inventive, productive


CREATIVITY
- originality with imagination


CREST
- the top of a slope, hill or wave; the white top of a large wave


CRITICAL THINKING
- the ability to make decision based on logic and facts


CRITICIZE
- to examine critically, to express judgement


CUBE
- a three dimensional square


CUBIC
- 4 part symmetry


CURRENT
- water or air moving in a certain direction, a running stream


CURRENT ELECTRICITY
- the flow of electricity through something or along a wire or cable


CURVE
- a line that has no straight parts


CUT
- to divide, wound, or detach with an edged instrument


camera

 

 


Computer

 


cube

D
DATA - facts or information to be used as a basis for discussing or deciding something, or prepared for being processed by a computer

DECIBEL
- a unit for measuring the relative loudness of sound


DENSITY
- closeness, compactness; the amount of matter to a unit of bulk


DESCRIBE
- to tell or depict in written or spoken words


DESIGN
- a drawing, plan, or sketch made to serve as a pattern from which to work; arrangement of details, form, color, thoughts to develop further ideas


DIRECT CURRENT
- electrical current that flows in one direction


DIAMOND
- two triangles, with their basis together


DIG
- to break up or move around with a tool or machine or claws, to make a way or hole


DISCOVER
- reveal, get knowledge, learn


DISCOVERY
- to find out a previously unknown subject


DRAG
- to pull along with effort or difficulty on the ground


DUMP
- a rubbish heap, a place where rubbish may be deposited

E
EAST - the point on the horizon where the sun rises

ELECTRICAL CHARGE
- a charge of electricity


ELECTRICITY
- a form of energy occurring in certain particles



ELECTROMAGNET
- a magnet consisting of a metal core magnetized by a coil, carrying electric current, 
wound around it


ELECTROMAGNETIC FORCE
- a force created by the combination of electricity and magnetism


ELECTROMAGNETISM
- a general term that unites electricity and magnetism both physically and 
theoretically 


ELECTRON
- a particle of matter with a negative electric charge


ELECTRONICS
- the branch of physics that deals with electrons in motion


ELEVATOR
- an apparatus for transporting people or goods from one floor of a building to another by the use of levers, gears and cables


ENERGY -
the capacity for vigorous activity


ENGINE
- machine for turning power on to some work, especially a machine that can start others moving


ENGLISH SYSTEM
- units of measurements with historical development (using parts of the body)


ESTIMATE
- a judgement of things, the approximate value or amount


ESTIMATION
- estimating, judgement of a thing or person approximate value or amount


EQUILATERAL
- equal; all sides equal, all angles equal


EVALUATE
- to find out or state the value of, or to assess


EXPERIMENT
- try in order to find out; make trials or test


EXTRAPOLATE
- to derive from preexisting information 


EYEGLASSES
- lenses for correcting or assisting defective sight


EYE PIECE
- the lens or lenses to which the eye is applied at the end of a telescope or a microscope

F
FABRIC - cloth woven or knitted or felted material

FARSIGHTED
- seeing distant things more clearly than near ones


FEEL
- touch


FIBER
- a textile substance that is made, a threadlike piece of glass


FILAMENT
- a fine wire in a light bulb etc. giving off light when heated by a current


FLOUR
- the fine meal made by grinding grain, especially wheat


FLUID
- any liquid or gas; something that will flow


FOCAL DISTANCE
- distance from its center to its principal focus 


FOCAL LENGTH
- distance between the center of a converging thin lens and an object


FOCAL POINT
- the point of focus; a center of action or interest


FOCUS
- the point or distance at which an object is most clearly seen by the eye or through a lens


FORCE
- strength, power or intense effort


FORENSIC
- application of evidence in a court


FREQUENCY
- the rate of the occurrence or repetition of something


FRICTION - the rubbing or contact of one thing to another

FUEL
- anything that can be burned to make a useful fire


FULCRUM
- the point at which a lever turns


FUZZ
- something that is fluffy or frizzy

G
GAMMA RAY - the x- ray of very short wavelengths emitted by radioactive substances

GARBAGE
- any rubbish or trash


GAS
- vapor, not a solid or liquid; any substance when it is like air in form


GEAR
- a set of toothed wheels working together in a machine


GENERATOR
- a machine for converting mechanical energy into electricity 


GEOMETRY
- the study that measures and compares lines, angles, surfaces, and solids; the mathematics of space


GIRTH
- the measure around anything


GLASS
- a hard brittle substance usually transparent


GLAUCOMA
- pressure inside the eye that can cause blindness


GLIDE
- move along smoothly, evenly, and easily


GLUE
- substance that binds things together


GRADUATED CYLINDER
- a piece of equipment that easily measures displacement; a long, narrow tube


GRAPH
- a line or diagram showing how one quantity depends on or changes with another


GRAVITATIONAL ATTRACTION
- bodies that come toward each other


GRAVITY
- a force between 2 bodies


GREECE
- a country in southeast Europe


GUESS
- to come to an opinion with enough evidence to prove 

H
HAND LENS - a magnifier you can hold in your hand

HEAR
- getting sounds through the ear and the brain interprets


HEARING
- to perceive sounds with the ear


HEART
- rounded sides meeting at a point at bottom and curving inward at the top


HEAT
- a form of energy produced by the movement of molecules, a hot temperature


HEAT ENERGY
- energy produced by an increase in temperature


HEAVY
- having great weight


HEIGHT
- how high anything is; how far up a thing goes


HEXAGONAL
- 6 part symmetry


HOLOGRAM
- an image made by a laser that appears to be three dimensional


HOME
- the place where one lives


HUMAN
- composed of men, women, and children


HUMAN-MADE
- made from humans


HYDROELECTRIC
- electricity created by moving water, usually involving a dam


HYPOTHESIS
- a guess to guide investigation

I
ILLUSON - something that a person wrongly supposes to exist

IMAGE - a likeness or representation

INCANDESCENT
- glowing with heat, shining


INCH
- 1/12 foot or 2.54 cm


INCIDENT RAY
- light that enters an object


INCLINED PLANE
- a leaning slope


INCOHERENT
- rambling in speech or in reasoning


INFRARED WAVES
- waves large than visible light


INSULATION
- protection from losing heat or electricity


INTERACTION
- action on each other


INTERPRET
- explain the meaning of


INTERPRETATION
- to explain the meaning of


INVENTION
- something created through imagination and creativity


INVENTOR
- person who creates or makes up an object


INVESTIGATE
- to make a careful study of in order to discover the facts


INVESTIGATION
- a careful study in order to discover facts 


IRIS
- the flat circular colored membrane in the eye with a circular opening in the middle
J
JET PROPULSION - movement in one direction by a jet of air, gas, etc that is forced in the opposite direction

JOINTS
- the place at which two things are joined together; in living organisms refers to the parts where two bones move on one another, and the way those parts are put together
K
KALEIDOSCOPE - a toy consisting of a tube containing small brightly colored fragments of glass etc. and mirrors that reflect light forming changing patterns

KILOWATT HOUR
- a unit of electric power equal to 1000 watts


KILOGRAM
- the basic unit of mass in the International System of Units


KINETIC
- of or produced by movement
L
LANDFILL - a lowland built up with layers of trash or garbage altering with layers of earth

LASER
- a device that generates an intense and highly concentrated beam of light; an acronym for:  Light Amplification by simulated Emission of Radiation


LENGTH
- linear measurement


LENS
- a piece of glass or glasslike substance with one or both sides curved for use in optical instruments


LEVER
- a bar or other device pivoted on a fixed point in order to lift something or force open


LIFT
- to raise to a higher level or position


LIGHT
- of little weight; electromagnetic radiation traveling 186,300 miles per second; allowing visibility


LIGHT BULB
- a round glass container enclosing a filament that is made to glow by electricity


LIGHTNING
- a flash of electricity in the sky


LINE
- a long, narrow mark


LINEAR
- measuring in a straight, one dimensional line


LINE GRAPH
- a graph that uses lines to explain itself


LINT
- tiny bits of thread or fiber


LIQUID
- a fluid, material that moves


LOCOMOTIVE
- railroad engine; any engine that goes from place to place on its own power


LODESTONE
- a magnetic rock


Light Bulb

M
MACHINE-apparatus for applying mechanical power

MAGIC
- the art of making things happen by secret charms and sayings


MAGICIAN
- person who can use magic


MAGNESIA
- a white powder that is a compound of magnesium


MAGNET
- a piece of iron or steel that points north or south when suspended


MAGNETIC
- having the properties of a magnet


MAGNETIC FIELD
- the force field around a magnetic substance


MAGNETIC FORCE
- force that is drawn by a magnet


MAGNETISM
- being magnetized


MAGNIFICATION
- cause to look larger than it really is


MAGNIFIER
- an object that increases the apparent size of an object


MAGNIFY -
to increase the apparent size


MAGNIFYING GLASS
- a lens that magnifies things


MAGNIFYING LENS
- a clear substance that makes things larger


MARGIN OF ERROR
- amount in variance in data


MASS
- a coherent unit of matter with no specific shape


MATHEMATICS
- the science of numbers, quantity and space


MATHEMATICIAN
- person skilled in mathematics


MEASURE
- the size or quantity of something found by measuring


MEASUREMENTS
- dimensions of how large an object is


MEASURING
- to find the size or quantity or extent of something by comparing it with a fixed unit or with an object known


MEASURING SPOON
- a spoon that is calibrated


MECHANICAL
- a machine or mechanism


METAL
- any of a class of mineral substance such as gold, silver, copper, iron, uranium, or an alloy of any of these


METRIC
- of or using the metric system 


METRIC SYSTEM
- based on units of ten; weight in grams, liquid is liters, distance meters


MICROSCOPE
- an instrument having a magnifying lens that produces an enlarged image of an object


MICROGRAVITY
- small amount of gravitational attraction compared to Earth


MICROWAVES
- an electromagnetic wave of length between about 50 centimeters and 1 millimeter


MILLIMETER
- one thousandth of a meter


MIRROR
- a piece of glass backed with silver so that reflection takes place


MOON
- usually refers to a satellite of any of the planets; the Earth's satellite is also called the Moon


MORSE CODE
- a code in which letters of the alphabet are represented by various combinations of short and long sounds or flashes of light 


MOTION
- change of position or place


MOTOR
- a machine that supplies moving power for a vehicle or boat


MOVE
- put in a different place; change the position of


MOVEMENT
- moving; change in place


MUSCLES
- the tissue in the bodies of people and animals which can be tightened or let loose and thus make the body move 


Moon

N
NATURAL - coming in the ordinary course of events; produced by nature

NATURE - all things except those made by humans

NEARSIGHTEDN
- not able to see far


NEGATIVE
- not positive, lacking positive qualities or characteristics


NEGATIVE CHARGE
- containing or producing the kind of electric charge carried by electrons


NEST
- a structure shaped something like a bow, built by birds out of twigs, straw, etc


NEUTRON
- a particle that is neutral electrically and has about the same mass as a proton


NIGHT
- the time between evening and morning


NON CONDUCTOR
- a substance that does not conduct heat or electricity


NON MAGNETIC
- a substance that is not attracted to a magnet


NORTH
- the point or direction to the left of a person facing east


NUCLEAR
- pertaining to the nucleus of an atom; atomic energy


NUCLEAR ENERGY
- energy produced through intense and complicated chemical reactions


NUCLEUS
- the center of the atom


Nest

O
OBJECTIVE - a magnifying lens that is a part of a microscope

OBSERVATION
- to notice


OBSERVE
- see and note; notice; examine closely 


OPTIC NERVE
- the nerve of sight between the optic centers of the brain and the eye


OPTICAL
- visual, of the eye


OPTICAL ILLUSION
- an involuntary mental misinterpretation of something seen, caused by its deceptive appearance 


OPTICS
- the scientific study of sight and light to its medium

P
PAPER - a substance manufactured in thin sheets from wood, fibers, rags, etc. used for writing, printing or drawing or wrapping things

PAPER MACHE
- a mixture of flour, water, and strips of paper that can create a solid when it dries 


PARALLEL
- at or being the same distance apart everywhere, like the two rails of a railroad track


PARALLEL CIRCUIT
- circuits placed continuously at the same distance from each other


PARTNER
- one who shares with another or others in some activity, especially in a business firm where he shares


PATTERN
- an arrangement of lines, shapes and colors, a decorative design


PENTAGONAL
- 5 part symmetry 


PERCEPTION
- understanding of a subject


PHENOMENA
- a fact, occurrence or change perceived by any of the senses of mind


PHYSICAL
- of the body


PHYSICS
- the scientific study of the properties and interactions of matter and energy


PITCH
- to set at a particular degree or slope level


PLANOCONCAVE
- object that is flat on top and concave on the bottom


PLANOCONVEX
- object that is flat on top and convex on the bottom


PLASTIC
- a synthetic resinous substance that can be given any permanent shape by molding it under pressure and heat


PLATE TECTONICS
- the creation and consumption of the crust of the earth and the interpretation of data to understand the interior of the Earth


PLOT
- mark the position of something on a map or diagram


POLLUTION
- uncleanness; defiling


POSITIVE
- containing or producing the kind of electric charge produced by protons, like the rubbing of glass with silk 


POSITIVE CHARGE
- a charge through which electric currents flow


POTENTIAL
- capable of coming into being or of being developed or used


POWER
- strength; force; might


PREDICT
- to tell in advance


PREDICTION
- forecast


PRISM
- a solid geometric shape with ends that are similar, equal and parallel.


PRESSURE
- the continued action of a weight or force


PROBLEM
- any question involving uncertainty


PROCEDURE
- course of action, how you do it


PROTON
- a particle of matter with a positive electric charge


PULL
- to exert force upon (something) so as to move it towards oneself or the source of the force


PULLEY
- a wheel over which a rope, chain, or bet passes, used in lifting


PUPIL
- an opening in the center of the eye through which light passes through to the retina 


PUSH
- to exert force upon (something) so as to move it away from oneself or away from the source of the force


PYRAMID
- a structure with a flat square base with slopping sides that meet at the top


Pyramid

Q
QUALITATIVE - observational study that does not involve great mathematical manipulation of data

QUANTITATIVE
- mathematical study in which data is gathered and manipulated


QUESTION
- a sentence requesting information or an answer


Question

R
RADIAL - from a center, outward in rays

RADICAL
- giving to the root or foundation of something


RADIO WAVES
- waves used to transmit sound


RAMP
- a slope joining two levels of floor or road etc.


RECORD
- set down in writing so as to keep for future use


RECOVERY
- to return to a normal condition after an illness or unconsciousness


RECTANGLE
- a 4 sided polygon


REFLECT
- give back an image of


REFLECTED RAY
- light that bounces off a surface


REFLECTION
- bounces off a surface


REFRACT
- bends light 


REFRACTION
- the bending of a ray of light, heat and sound at the boundary between two mediums of dissimilar nature


REPEL
- to drive away


RESEARCH
- a careful hunting for facts or truths; inquiry; investigation


RESEARCHER
- a person who conducts a program that looks into investigation


RESULT
- an answer or formula


RETINA
- a layer of membrane at the back of the eyeball sensitive to light


RHOMBOHEDRAL
- resembling the shape of a rhombohedron


RHOMBOHEDRON
- a solid, bounded by 6 parallelograms


RIGID
- stiff not binding or yielding


RING
- put a ring around; enclose; form a circle around


ROCKET
- a self-propelled device operation by means of gases escaping from a nozzle or jet at the rear of a combustion chamber


ROLLER SKATE
- one of a pair of sets of four wheels attached to the sole of boots or shoes so that the wearer can glide over hard surfaces


ROME
- the capital of Italy


ROTATE
- move around a center or axis, turn in a circle; revolve


ROUND
- having curved shape or outline like a circle, sphere or cylinder


RUBBER
- a tough elastic substance made from the coagulated juice of certain tropical plants or synthetically produced 


RULER
- straight strip of wood, metal etc used in measuring and drawing lines


Rocket

S
SAFETY - freedom from harm or danger

SCALE
- the pan of a balance used for weighing


SCIENCE
- knowledge gained by logic or reasoning


SCIENTIFIC METHOD
- a systematic approach to gathering data and observation 


SCIENTIST
- a person who is expert or authority on any of the various fields in science, including biology, 
geology, physics, chemistry


SCREW
- a metal pin with a large spiral edge


SEMI-CONDUCTOR
- substance that conducts electricity but not as well as most metals do. 


SENSES
- the faculties of sight, hearing, smell, taste and touch by which the external world is perceived


SERIES CIRCUIT
- circuits that are connected to one another much like christmas lights


SEQUENCE
- succession, the coming of one thing after another


SERIES
- things alike in a row; things placed one after another


SHAPE
- an area or form with a definite outline


SHELL
- the hard outer covering of eggs, nuts, and animals


SIGHT
- the faculty of seeing, ability to see, eyesight


SILICON
- an element that is a silver color, metallic luster, that does not occur naturally; used in the 
computer industry


SIMPLE MACHINE
- a basic machine such as a lever that takes a small amount energy and produces a large amount of energy to be used to form work 


SKELETON
- the bones of a body, fitted together in their natural places


SKY
- the covering over the Earth; the region of the clouds or the upper air


SLIGHTLY MAGNETIZED
- not much or great amount of magnetism


SMELL
- a sensation perceived with the nose


SOAR
- fly upward; fly at great height


SOCIETY
- a group of persons united by a common purpose or interest


SOLAR
- having to do with the Sun


SOUND
- vibrations that travel through the air that are detectable by the ear


SOUND WAVE
- a wave that consists of successive compressions and refractions of the medium through which it travels


SOUR
- having a tart taste


SOUTH
- the direction opposite north


SPACE
- unlimited room or place extending in all directions


SPADE
- geometric shape, upside down heart with a short stem 


SPHERE
- a round 3 dimensional body


SPIN
- to turn or cause to turn rapidly on its axis


SPIRAL
- advancing or descending in a continuous curve that winds around a central point on its axis


SQUARE
- a box with 4 equal sides


STAR
- any of the bright points seen in the sky at night


STATIC
- force acting by weight without motion


STATIC ELECTRICITY
- electricity present and not flowing as a current


STEAM
- water in the form of vapor or gas


STIR
- to move or cause to move


STRONG NUCLEAR
- the attraction of particles inside the nucleus


STRONGLY MAGNETIZED
- having great properties of magnetism


SUBATOMIC FORCE
- attraction between neutrons, protons, and electrons


SURFACE
- the outside of anything


SUSPENSION
- being suspended


SYMMETRY
- equality of parts


SYNTHETIC
- made by synthesis, manufactured as opposed to produced naturally


Scientist

T
TALL - higher than the average; high; of the specified height

TASTE
- the sensation caused in the tongue by things placed upon it


TECHNOLOGY
- applied science used in society


TELEGRAPH
- system or apparatus for sending messages over a distance by transmission of electrical impulses along wires 


TELESCOPE
- an optical instrument using lenses or mirrors or both to make distant objects seem larger


TESSELLATION
- mosaic, a mathematical term that refers to polygons that create a pattern


TEST TUBE
- cylindrical container


THINK
- have ideas


THREAD
- a thin length of any substance


THRUST
- push with force


THREE DIMENSIONAL
- a solid; real object


TOOL
- a thing (usually something held in the hand) for working on something


TOPOLOGY
- the study of curved surfaces


TOUCH
- to be or come together so that there is no space between to meet (another object) in this way


TRAIN
- line of cars:  a railroad train including the engine, coaches, and caboose


TRANSMIT
- to send


TRANSPORTATION
- carry from one place to another


TRANSVERSE
- lying across; placed crosswise; crossing from side to side


TRIANGLE
- 3 sided figure


TROUGH
- the depression between two ridges or waves


TURN
- to change or cause to change in position so that a different side becomes uppermost or nearest to a certain point


TWO DIMENSIONAL
- a flat representation of a three dimensional object


Train

U
ULTRAVIOLET RAYS - rays of radiation having a wave length that is slightly shorter than that of visible 
light ray and the violet end of the spectrum


UNIVERSE CYCLE
- the birth and evolution of the universe 


UNMAGNETIZED
- not magnetic


URBAN
- of or situated in a city or town


URBAN PLANNING
- designing for a city


UTILITY COMPANIES
- companies dealing with utility


Urban

V
VELOCITY - swiftness, quickness; rate of motion

VIBRATIONS
- moving rapidly and continuously to and from


VIRTUAL IMAGE
- an illusionary image that is seen by an observer through a lens but cannot be projected on screen


VOLT
- the unit of electromotive force; one volt causes a current of one ampere to flow through a resistance of one ohm


VOLUME
- the amount of space within something
W
WATT - a unit of electric power

WAVES
- ridges of moving water along the surface of the sea


WAVE LENGTH
- the distance between corresponding point in a sound wave or electromagnetic wave 
(crest to crest)


WEAK NUCLEAR
- the attraction that elements have when they combine


WEAVE
- to make (fabric) by passing crosswise threads or strips under and over lengthwise ones


WEDGE
- a piece of wood or metal that is thick at one end and tapered to the edge at the other, to thrust 
between things to force them apart or prevent them from moving


WEIGH
- to measure the weight of, especially by means of scales or a similar instrument


WEIGHT
- the force of gravity pulling down on an object


WEIGHTLESS
- having no weigh


WEST
- the point on the horizon where the sun sets


WHEEL
- a disk or circular frame arranged to revolve on a shaft that passes through its center


WHEEL AND AXL
E - a simple machine that utilizes 2 tires and a bar or axle to help produce movement


WIDE
- extending a certain distance from side to side


WINDMILL
- a mill or machine worked by the wind


WORK
- to perform by the use of the body or mental power in order to make do something


Waves

X
X-RAY - a photograph or examination made by means of a kind of electromagnetic radiation that can penetrate solids to make it possible to see into or through them


X-Ray

Y
Z
ZERO GRAVITY - no gravity

ZIPPER - a fastening device consisting of two flexible strips of material with projections that interlock when brought together by a sliding tab


Zipper