Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle...
Transcript of Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle...
![Page 1: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/1.jpg)
Earth’s LayersPresented by Kesler Science
![Page 2: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/2.jpg)
1. What are the main characteristics of the Earth’s layers?
2. How can the Earth’s layers be illustrated?
Essential Questions:
![Page 3: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/3.jpg)
Earth's Layers
Earth’s Crust• 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
![Page 4: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/4.jpg)
Earth's Layers
Oceanic Crust•A thin layer of crust that overlies the ocean basins
•More dense than continental crust
•Mostly basalt rock
• Thinner that continental crust. (5-10km)
• Younger (newer) than continental crust
© KeslerScience.com
![Page 5: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/5.jpg)
Earth's Layers
Continental Crust• Layer of rock which forms the continents
• Less dense than oceanic crust
•Mostly granite
• Thicker that oceanic crust
•Older than oceanic crust
© KeslerScience.com
![Page 6: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/6.jpg)
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
![Page 7: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/7.jpg)
Earth's Layers
Lithosphere• 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
![Page 8: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/8.jpg)
Earth's Layers
Asthenosphere
• Solid part of the upper mantle
• Weaker, less rigid (plasticity -like silly putty)
• Lithosphere 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.
© KeslerScience.com
![Page 9: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/9.jpg)
Earth’s Layers
• Mesosphere
• The strong lower part of the mantle.
• Molten rock in the mesosphere flows more slowly than molten rock in the asthenosphere.
© KeslerScience.com
![Page 10: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/10.jpg)
Earth's Layers
Outer Core• Liquid layer (magma) 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
![Page 11: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/11.jpg)
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
![Page 12: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/12.jpg)
Quick Action – Earth's Layers
Take a break. Get up and dance
Time for a break
© KeslerScience.com
![Page 13: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/13.jpg)
Earth's Layers
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
![Page 14: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/14.jpg)
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
![Page 15: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/15.jpg)
Check for Understanding
Can you…
1. List the characteristics of each of the Earth’s layers?
2. Illustrate the Earth’s layers?
© KeslerScience.com
![Page 16: Earth’s Layers › scschoolfiles › 1609 › earths_layers.pdf · Earth's Layers Mantle •Largest layer of the Earth •Under the crust about 2,890km •Composed of silicate rocks](https://reader033.fdocuments.us/reader033/viewer/2022042403/5f1710eea09fc3615a5e11fb/html5/thumbnails/16.jpg)
Quick Action – INB Template
Earth's Layers INB Template
1. Cut out the Template.
2. Complete the Venn Diagram.
3. Paste it in your notebook.
© KeslerScience.com