A



ACCELERATION
to become faster, to move or happen more quickly
AXLE
bar on which or within a wheel turns		  
B

 BALANCE
a weighing apparatus with two scales or pans hanging from a crossbar
 BICONVEX
(of a lens) convex on both sides		  
BINOCULAR

BLIND
not able to see
BRAILLE
system of writing and printing for blind people
BURNING
the process of being burned by fire

C


CAMERA
an apparatus for taking pictures, movie pictures, or television 
CARRY
to take from one place to another
CENTIMETER
one hundred of a meter=.3937 inch

COMPARE
to estimate of similarity between two things		    

D

 DESCRIBE
to tell or depict in written or spoken words


DIG
to break up or move around with a tool 
DISCOVER
reveal, get knowledge, learn

DUMP
a rubbish heap, a place were rubbish may be deposited		    

E


 ENERGY
the capacity for vigorous activity		    

F



FRICTION
the rubbing or contact of one thing to another		    

G


 GARBAGE
any rubbish or trash
 GEAR
a set of toothed wheels working together in a machine
GLASS
a hard brittle substance usually transparent

H


HAND LENS
a magnifer you can hold in your hand
HEAR
getting sounds through the ear and the brain interprets
HEARING
to percieve sounds with the ear

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

I


INCLINED PLANE
a leaning slope
INVENTION
something created through imagination and creativity
INVENTOR
person who creates or makes up an object

J


JOINTS
the place at which two things are joined together; in living organisms refers to the parts where two bones move one another, and the way those parts are put together		    

K

L


 LAND FILL
a low land built layers of trash or garbage altering with layers of earth
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		  

M


 MACHINE
apparatus for applying mechanical power
MAGNIFIER
an object that increases the apparent size of an object
MAGNIFY
to increase the apparent size

MEASURE
the size are quantity of something found by  measuring
METAL
any of a class of minerals substance such as gold, silver, copper, iron ,uranium or an alloy of any of these 		  
METRIC
of or using the metric system


MICROSCOPE
an instrument having a magnifying lens that produces an enlarged image of an object
MILLIMETER
one-thousandths of a meter


MOTION 
change of position or place


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 make the body move

N

O

 
OBSERVATION 
to notice		    

P


PAPER
a substance manufactured in thin sheets of wood, fibers, rags, etc. used for writing, printing or drawing or wrapping things		  
PATTERN
 an arrangement of lines, shapes and colors, a decorative design		  
PLASTIC
synthetic resinous substance that can be given any permanent shape by molding it
under pressure and heat
 
PREDICT
to tell in advance		  
PULL
to exert force upon something so as to move towards oneself or the source of the force
 PULLEY
a wheel over which a rope, chain, or bet passes, used in lifting


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

   

Q

R

 
RAMP
a slope joining two levels of floor or road etc.
 RECOVERY
to return to a normal condition after an illness or unconcciousness		  
REFLECT
give back an image of 

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

S


SCALE
the pan of balance used for weighing
 SCIENCE
the knowlege gained by logic of reasoning
 SCREW
a metal pin with a large spirall edge
 
SENSES
the faculties of sight, hearing, smell, taste and touch by whitch the external world is precieved 		  
SHAPE
an area or form with a definite outline		  
SIGHT 
the faculty of seeing, ability to see, eye sight

 

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


SMELL
a sensation precieved with the nose


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

T

 
TASTE
the sensation caused in the tounge by things placed upon it
 TELESCOPE
an optical instrument using lenses or mirrors or both to make distance objects seem larger		  
TEXTURE

TOOL 
a thing usually held something in the hand for working on something		  
TOUCH
to be or come together so that there is no space between to meet another object in this way		  

U

 
URBAN
of or situated in a city or town		    

V

W


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
 WEIGHT
the force of gravity pulling down on an object		  
WHEEL
a disc or circular frame arranged to revolve on a shaft that passes through its center
 
WHEEL AND AXLE
a simple machine that utilizes two tires and a bar or axle to help produce movement		    

X

Y

Z