sedimentary rock - rocks formed by accumulation or deposition of minerals & organic particles, landforms - features of earth's surface that make up terrain (mountains, valleys, plains, peninsula), sand dunes - accumulation of sand grains shaped into mounds by wind, delta - wetlands that becom rivers that empty into another body of water, canyon - narrow, deep valley cut by a river through rock, organisms - things that are alive (animals, plants, single cell life forms), weathering - process of wearing or being worn by long exposure to the atmosphere, erosion - the process of wearing away by wind, water, or other natural agents, deposition - the action of small things settling into something, compaction - what happens when something is crushed , cementation - a process where sediment is chemically glued together when minerals precipitate from the water they are dissolved in and fill the pore space between compressed sediment,

5th grade science: earth science

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