Jossybel aience Lesson 1: How Earth's Landforms Are Wom Down A model is something used to represent an object or process. A diagram is a model. A globe is a model of Earth. Models are often larger or smaller than the objects or processes they represent. Before scientists conduct an investigation, they make a plan. The plan includes a list of steps to follow. Gather a cookie pan or tray, soil or sand, a pitcher of water, and a metric ruler. How can you use these materials to make a model of weathering and erosion? Write the steps of your plan below.

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