The Interior Structure of Earth 1/13/17 The Interior Structure of Earth Objective: I will model the interior structure of Earth based on both chemical and physical composition. PAGE 49

Earth’s Interior can be divided two ways: chemical composition- what elements make up each layer physical composition- what state of matter the layer is

Chemical Composition crust: made up mostly of silicates (silicon + oxygen) two types: oceanic- thinner, more dense continental- thicker, less dense

Chemical Composition mantle: core: composed of silicates, but also aluminum, magnesium, and iron more dense than the crust core: composed of iron and nickel most dense layer

Physical Composition Lithosphere: Asthenosphere: Mesosphere: solid outer layer of Earth crust + the upper mantle Asthenosphere: has characteristics of a solid and a liquid plasticity- the ability of a solid to flow Mesosphere: Solid mantle rock below asthenosphere

Physical Composition Inner Core: Outer Core: very dense liquid iron and nickel flowing metals generate Earth’s magnetic field Inner Core: solid iron and nickel due to extreme pressure

Output Activity (Page 48) You have two options: Illustrate the diagram of Earth’s interior May use Figure 2 from page 28 in your textbook or find your own diagram on the iPad Label your diagram with both the chemical and physical layers 2) Create a graphic organizer to organize the information from your notes about Earth’s interior Concept map Venn diagram T-chart