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NeSA Science Physical Science

Terms in this set (60)

matter
something that takes up space
Mixture
when two or more things are combined, but the things do not change
physical properties
how something looks, smells, feels
pure substance
matter that cannot be separated into other kinds of matter by any physical process
Celsius
a metric unit of temperature
dimensions
measurement of the size of an object
elasticity
ability to go back to the original shape or size after being stretched, pressed, or squeezed together
fahrenheit
a jnonmetric unit of temperature
temperature
the measure of the warmth or coldness of something
volume
amount of space an object an object takes up
weight
the measure of the force of gravity acting on an object
centi
prefix meaning 100
kilo
prefix meaning 1,000
liter
a metric unit of volum
meter
a metric unit of length
metric
a universal system of measurement
milli
prefix meaning on thousandth
gas
matter that takes the shape and volume of its container
speed
the distance an object moves over a given amount of time
force
a push or a pull
friction
the force that resists motion between objects that are touching
gravity
a force that attracts all object to each other
attraction
a magnetic force drawing objects together and resisting sparation
magnetism
the force between poles of magnetics
repulsion
a magnetic force pushing objects apart and resisting spearation
sound
waves caused by vibrations through a material which can be heard when they reach an ear
pitch
the highness or lowness of a sound
refleection
light bouncing off an object
opaque
not allowing light to pass through
translucent
allows some light to pass through
transparent
allows all light to pass through
conductor
a substance that can allow electricity, heat, or sound to pass through it easily
electrical circut
a complete path along which electricity moves
compound
a pure substance composed of two or more elements chemically combined
element
a pure substance that cannot be broken down by chemical or physical means
chimical properties
characteristics of a substanece that determines how it interacts with other substatces
density
calculation of an object's mass divided by its volume
mass
a measure of the amount of matter an object has
condensation
change in the physical state of matter from liquid to gas phase that occurs only on the surface of the lkiquid
sublimation
change in the physical state of matter from solid to the gas phase without passing through the liquid phase
vaporization
change in the physical state of matter from liquid to the gas phase
burnign
a chemical change in which the substatnce is broken down and releasing heat and light
dissolving
a physical change in which particles of a substance is separated by water particles
phase change
a change in state of matter
rusting
a chemical change in which a metal react with oxygen to form a different compound
conservation fo matter
matter can neither be created nor destroyed
periodic table
arrangement of the known elements organized by their properties
constant speed
distance traveled in set amount of time
belocity
speed of an object in a specified direction
balanced forces
two or more forces that act upon an object and result in know change in motion
unbalanced forces
two or more forces in a change in an object's motion
gravitational force
the force of attraction between all masses in the universe
wave
the transfer of energy moving through a medium
medium
material that energy can transfer throug
absorption
the transfer of light energy into an object
refraction
the bendign of the path of light when it passes from one medium into another
scattering
light reflected in all directions by an uneven surface
transmission
to pass through air or some other medium
energy
ability to cause change or do work
law of conservation of Energy
energy can neither be created nor destored in chemical and physical changes
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