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Mr. Ted's Science Class February 12th, 2017 What are we learning today? Unit 10: The Earth's Environments I will be able to: (1) Describe the structure of the Earth (2) Describe the composition of the Atmosphere (2) Define: crust, oceanic crust, continental crust The Earth's Environments The Earth has 4 layers: All life on Earth exists on the crust (on land and in the sea) or in the air. The Crust: it is the outer layer of the Earth where all life is found. The Earth's Environments Can you draw the layers of the Earth? Which is the thickest layer of the Earth? A. Inner core B. Outer core C. Mantle D. Crust Which is the thinnest layer of the Earth? A. Inner core B. Outer core C. Mantle D. Crust The Earth's Environments The crust can be 5 to 70 KM deep. The thinnest part of the crust is the oceanic crust. The thickest part of the crust is the continental The Earth's Environments Oceanic crust: The outer layer of the Earth that has oceans above it Continental crust: The outer layer of the Earth that the land is made from The Earth's Environments Air is a mixture of gases. Gas % in dry air Nitrogen 78 Oxygen 21 Argon 1 Carbon dioxide very small amounts The Earth's Environments Air is a mixture of gases. Gas % in dry air Nitrogen 78 Oxygen 21 Argon 1 Carbon dioxide very small amounts Activity sheet Mr. Ted's Science Class February 12th, 2017 What did you learn today? Unit 10: The Earth's Environments Can you: (1) Describe the structure of the Earth? (2) Describe the composition of the Atmosphere? (2) Define: crust, oceanic crust, continental crust?