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Balance and Motion
Vocabulary words for the FOSS Module "Balance and Motion"
50
Science
1st Grade
02/22/2013

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Term
arch
Definition
a curved shape
Term
at
Definition
a distance from far away; not close by
Term
axis
Definition
a straight line around which something turns
Term
axle
Definition
a rod or shaft to which wheels can be attached
Term
balance
Definition
to be in a stable position
Term
balance
Definition
point the place on which an object balances
Term
compass
Definition
a magnetic needle in a case. Compass needles on Earth point north.
Term
counterbalance
Definition
to place weights on an object to keep it in a stable position
Term
counterweight
Definition
weight added to a system to make it balance
Term
crayfish
Definition
a freshwater shellfish
Term
disk
Definition
an object that is a circle in only one direction and can fall over; a disk can be a wheel
Term
force
Definition
a push or a pull
Term
friction
Definition
a force that opposes motion
Term
gravity
Definition
a force that pulls things toward Earth
Term
kalimba
Definition
an African thumb piano with steel springs that vibrate at various rates
Term
knot
Definition
to firmly tie two pieces of material together
Term
loop
Definition
an opening that is made by curving a piece of material into a circle
Term
machine
Definition
something that helps people do work. A machine can make heavy things move by using a push or a pull.
Term
magnet
Definition
an object that sticks to iron and steel. Magnets can push or pull other magnets or objects made of iron or steel.
Term
magnetism
Definition
a force that can work on another object without touching it
Term
mobile
Definition
a system of balanced beams and objects
Term
motion
Definition
the act of moving
Term
pitch
Definition
how high or low a sound is
Term
property
Definition
something you can observe about an object or a material. Volume is an example of a property of sound.
Term
pull
Definition
when you make things move toward you. Pulling is a force.
Term
push
Definition
when you make things move away from you. Pushing is a force.
Term
ramp
Definition
an object that has a slope
Term
roll
Definition
to move by turning over and over from one place to another
Term
rotate
Definition
to turn in circles a lot of times; to spin
Term
runway
Definition
a path over which something moves or lands
Term
shaft
Definition
something that acts as an axis
Term
slope
Definition
a surface that is higher on one end
Term
sound
Definition
something you hear
Term
sphere
Definition
an object that is round in all directions and rolls in all directions
Term
spin
Definition
to move by turning around an axis
Term
stable
Definition
position steady, not falling over
Term
system
Definition
a set of objects that are related in some way and can be isolated for study; a group of things or parts that form a whole
Term
tool
Definition
something that helps people do work. A tool can make things move by using a push or a pull.
Term
top
Definition
a toy that spins
Term
triangle
Definition
a three-sided shape
Term
unstable
Definition
when something is not steady and falls over
Term
vibration
Definition
a back-and-forth motion. Vibration makes sound.
Term
volume
Definition
how soft or loud a sound is
Term
weight
Definition
how heavy something is
Term
wheel
Definition
an object that is a circle in only one direction and can fall over; a wheel is a disk
Term
whirl
Definition
to move or turn around quickly or suddenly
Term
wing
Definition
the moveable appendages that birds and other animals use to fly
Term
work
Definition
tasks to be accomplished. People use tools and machines to make work easier.
Term
xylophone
Definition
a musical instrument made from a set of bars or tubes of various lengths that make sounds with different pitches
Term
zoomer
Definition
a toy made from a plastic disk and a piece of string; it spins around when tension is released from the twisted string
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