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The Discovery Fair

4th Grade: OCR Unit 2 Lesson 1

TermDefinition
converse (v) to talk together
reputation (n) what most people think of a person or thing
lead (n) a heavy, soft gray metal that is easy to bend and melt
radiation (n) energy given off in the form of waves or very tiny particles
catalyst (n) a condition or event that causes or speeds another condition or event
controversial (adj) relating to or causing much discussion, disagreement, or argument
sites (n) positions or locations of something
luminous (adj) radiating, glowing or reflecting light; shining; bright
efficient (adj) able to get the results wanted within a minimum of time or effort
observe (v) to make a careful study of
Created by: Evecadranel
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