stable, staying mostly the same, pattern, something we observe to be similar over and over, rock layer, a thick sheet of rock formed from the same material, inference, something you figure out based on observations and information you already know, geologist, a scientists who studies the processes and materials that form the solid part of Earth, observation, something you notice using any of the five senses, data, observations or measurements recorded in an investigation, evidence, information that supports an answer to a question, claim, a proposed answer to a question, cement, to stick together in the process of forming rock, argument, the use of evidence to say why one idea is the best, model, something scientists made to answer questions about the real world, environment, all the living and nonliving things in an area, erosion, when rock, soil, or sand is worn down and moved from one place to another by water, wind, or ice, sediment, small pieces of rock, such as silt or sand, sedimentary rock, a type of rock formed from sediment that compacts and cements over time, fossil, a clue about life from the past that is preserved in rock, compact, to press together

Earth's Features

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