Presented by Kesler Science Earth’s Layers Created by Kesler Science – More 5E lessons at KeslerScience.com Presented by Kesler Science

Essential Questions: What are the main characteristics of the Earth’s layers? How can the Earth’s layers be illustrated?

Earth’s Crust Earth's Layers The outer layer of the Earth Similar to the skin on an apple (thinnest layer) Made up of both continental (land)and oceanic crust(under the ocean) 5-50 km thick © KeslerScience.com

Oceanic Crust Earth's Layers A thin layer of crust that overlies the ocean basins More dense than continental crust Mostly basalt rock Thinner than continental crust. (5-10km) Younger (newer) than continental crust © KeslerScience.com

Continental Crust Earth's Layers Layer of rock which forms the continents Less dense than oceanic crust Mostly granite Thicker than oceanic crust Older than oceanic crust © KeslerScience.com

Crust Earth's Layers The outer layer of the earth Similar to the skin on an apple (thinnest layer) Made up of both continental (land)and oceanic crust(under the ocean). 5-50 km thick © KeslerScience.com

Lithosphere Earth's Layers Solid outer section of the Earth, which includes the crust (rocky layer) Also, includes the cool, dense, rigid upper part of the mantle © KeslerScience.com

Earth's Layers Asthenosphere Solid part of the upper mantle Weaker, less rigid (plasticity - like silly putty) Crust moves over the plastic-like asthenosphere These plates crash into each other. Here the oceanic crust is subducting under the continental crust which creates volcanoes. If you’re brave, you can let students play with silly putty or make your own concoction of slime. There are lots of recipes on the Internet. They represent the properties of a solid but move like a liquid. https://sciencebob.com/make_slime_with_borax/ © KeslerScience.com

Quick Action – Earth's Layers Draw and label a picture of the Earth’s lithosphere and asthenosphere in your INB’s. Lithosphere Asthenosphere © KeslerScience.com

Earth's Layers Mantle Largest layer of the Earth Under the crust about 2,890km Composed of silicate rocks rich in magnesium and iron Intense heat causes the rocks to rise and then cool and sink. The process is called convection, which causes the crust to move. Average temperature 3000o © KeslerScience.com

Outer Core Earth's Layers Liquid layer 2,300 km thick, second largest Composed of liquid iron and nickel Lies between inner core and mantle Because the magma moves around the inner core, Earth’s magnetic field is created. Average temperature 4000o -5000o © KeslerScience.com

Earth's Layers Inner Core A solid ball of metal 1,250 km thick Made of solid nickel and iron So hot it melts everything in the outer core Spins at a speed faster than the Earth rotates Densest layer of the Earth Average temperature 5000o - 6000o © KeslerScience.com

Quick Action – Earth's Layers Take a break. Get up and dance https://goo.gl/aDFsvz Teacher needs to queue this up prior to the slide as it will not link from PP. © KeslerScience.com

Waves of energy caused by earthquakes and other rock movement Earth's Layers Video What are seismic waves? Waves of energy caused by earthquakes and other rock movement Travel through some layers of the Earth Recorded with seismographs © KeslerScience.com

Earth's Layers Seismic waves are used to determine which layers of the Earth are solid or liquid. Some seismic waves cannot pass through certain layers giving us a clue to the layers composition. © KeslerScience.com

Quick Action – INB Template Earth's Layers INB Template Cut out the four INB templates to form a flip book. This is page 4 and should be completely pasted into your notebook. The following 3 pages will attach only at the top. © KeslerScience.com

Quick Action – INB Template Page 3 Page 2 Page 1 © KeslerScience.com

Quick Action – INB Template Use your notes from today’s lesson to complete the foldable and the Venn Diagram Page 2 Page 3 Page 1 © KeslerScience.com

Quick Action – INB Template Earth's Layers INB Template Draw a Venn diagram Use the information in your notes and foldable to complete the diagram © KeslerScience.com

Check for Understanding Can you… List the characteristics of each of the Earth’s layers? Illustrate the Earth’s layers? Clear up any confusion and answer questions. © KeslerScience.com