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Thermal Energy Flow

Grade 8 Q2 S6 - How does thermal energy flow?

TermDefinition
Independent variable The one thing in an experiment that you change on purpose to see what happens
Dependent variable The thing you measure in an experiment to see how it changes
Constant Something in an experiment that stays the same the whole time
Control variable A factor in an experiment that is kept the same to make sure the test is fair
Control group A group in an experiment that does not get the special treatment, used to compare results
Kinetic theory of matter The idea that all matter is made of tiny moving particles
Solid A state of matter with a fixed shape and volume
Liquid A state of matter that has a fixed volume but takes the shape of its container
Gas A state of matter with no fixed shape or volume, it spreads to fill its space
Temperature A measure of how hot or cold something is, based on how fast particles are moving
Thermal energy The total energy of moving particles in a substance
Heat transfer The movement of heat from something warmer to something cooler
Conduction Heat transfer through direct contact between materials
Convection Heat transfer through the movement of liquids or gases
Radiation Heat transfer through invisible waves, even through empty space
Convection currents The circular motion of fluids caused by warm parts rising and cool parts sinking
Heat flow The movement of heat from a hotter object to a cooler one
Conductor A material that allows heat to move through it easily
Insulator A material that slows down or stops heat from passing through
Phase change When matter changes from one state to another, like solid to liquid or liquid to gas.
Created by: user-1840993
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