Understand science is based on observation of natural phenomena. Overview This activity allows students to determine how the material that makes up the Earth settles into layers. This activity can be used to promote inquiry about the composition of the Earth as well as to explore density, erosion, and deposition. Magnifying glasses Watches or a clock. Soil is formed by the weathering of rock.
Erosion is the process by which the weathered particles are moved from one place to another.
Deposition is the process by which new landforms are made when weathered rock or soil is laid down. There are many different factors that determine how soil settles from a particular medium such as wind, glaciers, and water. These are the driving forces of change on the Earth's surface. As students conduct this experiment, guide them through it without telling them what is happening or why. Prerequisite instruction Students should have some knowledge about the concepts of density, mass, and weight.