The Internal Structure of the earth.pptx

Lesson on earth's internal structure

1. Good Day!

2. Let’s Review

3. Shockwaves of energy that are released from the focus during an earthquake Seismic Waves can travel through the Earth’s inner layers Body Waves

4. Seismic Waves that travels quickly through the Earth and through liquids P-wave (primary wave) Seismic Waves that travels slower than a P-wave through Earth and solids S-wave (secondary wave)

5. Let’s Watch and Learn!

6. https://www.youtube.com/watch?v=plNigVkMyL8

7. Let’s Learn More!

8. The Composition of the Earth’s Interior https://scitechdaily.com/high-resolution-imaging-reveals-puzzling-features-deep-in-earths-interior/

9. https://education.nationalgeographic.org/resource/mantle//

10. thinnest and the outermost layer of the Earth that extends from the surface to about 32 kilometers below. Underneath some mountains, the crust’s thickness extends to 72 kilometers is subdivided into two regions: the continental crust and the oceanic crust. The Crust

11. The continental crust is mainly made up of silicon, oxygen, aluminum, calcium, sodium, and potassium. The thickness of the continental crust is mostly 35-40 kilometers. Continental crust, found under land masses, is made of less dense rocks such as granite. Continental Crust

12. is around 7-10 kilometers thick which its average thickness is 8 kilometers. It is found under the ocean floor and is made of dense rocks such as basalt. The oceanic crust is heavier than the continental crust. Oceanic Crust

13. Beneath the crust is the mantle, which extends to about 2900 kilometers from the Earth’s surface. It makes up about 80% of the Earth’s total volume and about 68% of its total mass. The mantle is mainly made up of silicate rocks, and is solid, since both S-waves and P-waves pass through it. is mostly made of the elements silicon, oxygen, iron and magnesium. The lower part of the mantle consists of more iron than the upper part. The Mantle

14. The crust and the uppermost part of the mantle form a relatively cool, outermost rigid shell called lithosphere and is about 50 to 100 kilometers thick. These lithospheric plates move relative to each other https://education.nationalgeographic.org/resource/mantle/

15. The crust and the uppermost part of the mantle form a relatively cool, outermost rigid shell called lithosphere and is about 50 to 100 kilometers thick. Beneath the lithosphere lies the soft, weak layer known as the asthenosphere , made of hot molten material. https://education.nationalgeographic.org/resource/mantle/

16. The core is subdivided into two layers: the inner and the outer core . The outer core is 2900 kilometers below the Earth’s surface. It is 2250 kilometers thick and is made up of iron and nickel. The temperature in the outer core reaches up to 2000 degree Celsius at this very high temperature, iron and nickel melt The Core https://www.google.com/url?sa=i&url=https%3A%2F%2Fb7aaronbrody.weebly.com%2Fouter-core.html&psig=AOvVaw2_Idk-9_h6gBywn9ZSLLlM&ust=1696745890071000&source=images&cd=vfe&opi=89978449&ved=0CBEQjRxqFwoTCIC805ul44EDFQAAAAAdAAAAABAR

17. The inner core is made up of solid iron and nickel and has a radius of 1300 kilometers. Its temperature reaches to about 5000 degree Celsius. The Core https://www.google.com/url?sa=i&url=https%3A%2F%2Fb7aaronbrody.weebly.com%2Fouter-core.html&psig=AOvVaw2_Idk-9_h6gBywn9ZSLLlM&ust=1696745890071000&source=images&cd=vfe&opi=89978449&ved=0CBEQjRxqFwoTCIC805ul44EDFQAAAAAdAAAAABAR

18. Let’s Summarize!

19. THANK YOU!