Earth's Interior

67 %
33 %
Information about Earth's Interior
Education

Published on August 6, 2009

Author: somark

Source: authorstream.com

Chapter 9: Earth’s Interior : Chapter 9: Earth’s Interior Chapter 9.1- Earth’s Core : Chapter 9.1- Earth’s Core Slide 4: Earthquakes Slide 5: Earthquakes are caused when the Earth’s crust shifts suddenly Slide 6: Earth’s crust slips because stress builds up and when it overcomes friction it slips! Fault Slide 7: Seismic Waves Shock waves produced by Earthquakes that travels through the Earth Slide 8: Primary Waves: The fastest waves that can travel through solids, liquids, and gases. Secondary Waves: Slower waves that can travel through solids, but NOT liquids, and gases. Seismograph : Seismograph Instrument that detects P and S waves Kabreet, Egypt : Kabreet, Egypt El Salvador, 2001 : El Salvador, 2001 Thailand : Thailand SHAKING DAMAGE IN SAN FRANCISCO These horses were killed and the wagon was crushed by falling debris. Note the welts on the horses' hide made as they struggled in the leather harness during the earthquake. Horses reportedly snorted and whinnied before the shock and tried to run when the ground motion began. : SHAKING DAMAGE IN SAN FRANCISCO These horses were killed and the wagon was crushed by falling debris. Note the welts on the horses' hide made as they struggled in the leather harness during the earthquake. Horses reportedly snorted and whinnied before the shock and tried to run when the ground motion began. Loma Pieta, CA 1989 : Loma Pieta, CA 1989 San Francisco, 1906 : San Francisco, 1906 Slide 17: Tombstones rotated off their bases in a cemetery near Anna, Ohio. Washington, 1949 : Washington, 1949 Slide 19: Kobe Earthquake In September 1985 a devastating earthquake shook Mexico City, Mexico, causing severe damage and destroying many of the city’s buildings. The quake left at least 9,500 people dead and about 30,000 homeless. (Richter Scale 8.1) : In September 1985 a devastating earthquake shook Mexico City, Mexico, causing severe damage and destroying many of the city’s buildings. The quake left at least 9,500 people dead and about 30,000 homeless. (Richter Scale 8.1) Inner Core : Inner Core Solid Composed of iron & nickel Temperature reaches 5,000 °C Begins 5150 km (3218.75 m) below the Earth’s surface Distance of inner core is 1300 km (812.5 miles) Outer Core : Outer Core Surrounds the inner core Begins 2900 km (1812.5 m) below the surface Is 2250 km (1406.25 m) thick Composed of molten (hot liquid) iron and nickel 2200°C 9.2: Earth’s Mantle : 9.2: Earth’s Mantle Mantle: Directly above the outer core Extends to a depth of 2900 km (1812.5 m) below the surface 80% volume of the Earth 68% of the planets mass Moho : Moho Andrija Mohorovoicic Observed a change in speed of seismic waves as they moved through Earth Waves increased at a depth of 32 to 64 km Indicated difference of density Mantle Components : Mantle Components Mantle is composed of silicon, oxygen, iron, and magnesium Density of mantle increases with depth due to higher & of iron Temperature ranges from 870°C to 2200°C Slide 28: Rock in the mantle flows like a thick liquid High temperature and pressure allow solid rock to flow Plasticity: When a solid has the ability to flow 9.3: Earth’s Crust : 9.3: Earth’s Crust Thin outermost layer Similar to an apple peel All life exists within a few hundred meters above crust Slide 35: Igneous Formed from magma cooling down and becoming rock! Slide 37: Sedimentary Formed from cementing of sediment Breccia Slide 41: Metamorphic Igneous or sedimentary rocks that change when heated or compressed for a long time Oceanic Crust : Oceanic Crust Crust beneath the oceans Less than 10 km thick Composed of silicon, oxygen, iron, and magnesium Continental Crust : Continental Crust Crust beneath the continents Average thickness of 32 km Thicker beneath mountains Composed of silicon, oxygen, aluminum, calcium, sodium, and potassium Lithosphere : Lithosphere Solid topmost part of the Earth 50 to 100 km thick and broken into large plates 7 major plates in the world Asthenosphere : Asthenosphere Directly below the lithosphere 130-160 km thick Contains hot molten material that flows like thick tar Mesosphere : Mesosphere The transition region between the mantle and the inner core

Add a comment

Related presentations

Related pages

Deutsche Geophysikalische Gesellschaft - Arbeitskreis ...

Arbeitskreis Dynamik des Erdinneren der Deutschen Geophysikalischen Gesellschaft e.V. (DGG) Sprecher des Arbeitskreises: Michael Riedel mrriedel@uni-potsdam.de
Read more

Structure of the Earth - Wikipedia, the free encyclopedia

The interior structure of the Earth is layered in spherical shells, like an onion. These layers can be defined by their chemical and their rheological ...
Read more

The Earths Interior - A look At The Inner Earth

Studying the earth's interior can help us to understand earthquakes, volcanoes, plate tectonics and more about the inner earths natural processes.
Read more

The Interior of the Earth - U.S. Geological Survey ...

Figure 2. Cross section of the whole Earth, showing the complexity of paths of earthquake waves. The paths curve because the different rock types found at ...
Read more

Earths Interior - Live Science: Scientific News, Articles ...

Earth's Interior. Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid ...
Read more

Earths Interior - Kids Science

Earths Interior. Introduction The earths interior has a number of layers. The major layers are the earth's crust, earth's mantle and the earth's core.
Read more

The Interior of the Earth - Welcome to UT Astrophysics ...

The study of the Earth's surface and interior is the domain of geology. We know little directly about the interior of the Earth. Most of our information in ...
Read more

Earth's Interior - The Nevada Seismological Laboratory

The Earth, the Sun, and the rest of the solar system, was formed 4.54 billion years ago by accretion from a rotating disk of dust and gas. The immense ...
Read more

Earth's Interior - Windows to the Universe

Earth has a diameter of about 12,756 km (7,972 mi). The Earth's interior consists of rock and metal. It is made up of four main layers: 1) the inner core ...
Read more

Inside the Earth, Earth's Interior Information, Facts ...

Get information, facts, photos, news, videos, and more about the interior of the Earth from National Geographic.
Read more