Soil Specimens 18pcs

Model Size: 44*24*12cm This product is mainly used in the teaching of secondary school geography to teach the seabed topography, the inner circle of the earth, the crustal structure, the topographical changes, the tectonics theory, the formation and distribution of volcanic earthquakes, and the formation of the earth's surface sea and land corridor. These contents are interrelated and cause and effect. For middle school students, it is often difficult to analyze and understand this, and because of its large spatial span and long change time, which is impossible to conduct actual observations, abstract and difficult to understand.