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5th Grade STAAR review - Physical Science

boiling point temperature at which a liquid changes to a gas, 100 degrees Celsius for water
conductor material that allows energy to flow easily
dissolve to form a solution with another substance
freezing point temperature at which a liquid changes to a solid, 0 degrees Celsius for water
gas state of matter in which the substance takes both the shape and the volume of its container
insulator material that does not allow energy to flow easily
liquid state of matter that has a definite volume, but takes the shape of the container
magnetism a force that pulls materials containing iron across a distance
mass amount of matter in an object or substance, measured in grams
matter anything that has mass and takes up space
melting point temperature at which a solid changes to a liquid, 0 degrees Celsius for water
physical properties characteristic that can be measured, observed, or changed without turning into a new substance
physical state the form that matter can take, such as solid, liquid or gas
relative density whether an object sinks or floats when compared to another object
solid state of matter with a definite volume and shape
solubility ability of one substance to dissolve in another
weight the measure of the pull of gravity on matter
dissolve the process of evenly mixing a solute (substance) in a solvent to form a solution
mixture a combination of two or more substances
solution a type of mixture where one substance dissolves in another and appears as a single substance
solvent a substance that dissolves another to form a solution (ex. water)
solute a substance that is dissolved in another to form a solution (ex. salt)
solubility the ability of a substance to dissolve in another substance
electricity the flow of electrical power or charge
circuit a path through which electricity can flow
current the flow of electric charge
open circuit is a circuit where the path has been interrupted as some point so that the current will not flow; also called an incomplete circuit
closed circuit is a circuit where the path is complete so that the current will flow; also called a complete circuit
conductor a material that allows energy to flow well
insulator a material that does not allow energy to flow well
light energy a form of energy that travels in waves and is visible to the human eye
reflect the bouncing back of light when it strikes a surface
refract bending the light when it changes speed as it passes through different mediums (substances)
transparent allows light to pass through easily
translucent allows some light to pass through
opaque does not allow light to pass through
light ray beam of light that is moving in a straight line from a source
magnify to make something appear larger
medium a solid, liquid or gas that can transmit energy
transmit light when light rays pass through matter
lens curved, transparent material that refracts light
concave lens curved inward, spreads light
convex lens curved outward, focuses light
energy the ability to do work
energy transformation the process of changing energy from one form to another
mechanical energy energy of motion or the potential for motion
sound energy energy produced by vibrations as they travel through a specific medium
thermal energy heat energy
force a push or pull on an object
friction force caused by objects rubbing together that makes them slow down or stop
evaporation liquid water changes to water vapor
condensation water vapor cools and changes to liquid water
Created by: 1017sandy