Memory Game 5th Grade 3.3 VocabularyOnline version Vocabulary for Unit 3 Week 3 in the 5th grade wonders curriculum by Erin Slegaitis Structure Visible Contact An arrangement of parts Moisture To wear or wash away slowly; eat away A touching or meeting of persons or things Repetition The act or process of doing again; repeating Something formed or made Water or other liquid in the air or on the surface; a slight wateriness Particles Very small bits or pieces of something Able to be seen Formation Erode