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Unit B / Ch. 1

Science Terms / Unit B / Chapter 1

TermDefinition
Negative numbers temperatures below zero degrees on the Celcius scale that have a minus sign
positive numbers temperatures above zero degrees on the Celcius scale that have no sign
thermal energy the total energy of the particles that make up any matter
heat flow of energy from warmer matter to cooler matter
temperature a measurement of the average motion of the particles in a substance or object
expand to take up more space; to get larger
contract to take up less space; to get smaller
conduction the flow of heat from one object to another by direct contact between the objects
conductor a substance through which energy travels easily
insulator a substance that slows down the transfer of heat
convection the flow of thermal energy that occurs when a warm liquid or gas moves from one place to another
radiation the transfer of energy from one place to another without the use of matter
Created by: lleahy
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