Figure 1.CO2.

Slides:



Advertisements
Similar presentations
1. What is the outermost layer of the Earth called?
Advertisements

Pg. 25.  After Earth formed, radioactive elements decayed and heat was released  Caused melting of interior  Denser elements sank to core (iron and.
The Dynamic EarthSection 1 The Composition of Earth Part 2.
The Planet Oceanus. 2-1 The Earth’s Structure Earth consists of a series of concentric layers or spheres which differ in chemistry and physical properties.
Science Starter Begin following Layers of the Earth Directions, skip #1 and begin with #2. Examples of how your cut out should look.
Seismic waves- Earthquake waves travel differently as they move through different materials Through some materials they move straight, while others will.
Compositional Layers divided into 3 layers based on elements that make up each layer
Basic Structure of the Earth
Earth on the Move Earth Structure & Plate Tectonics Notes.
Layers of the Earth.
Earth’s Internal Heat.
STRUCTURE OF THE EARTH. Differentiation of Earth Earth is divided into layers based on density and composition Solid Layers – Core (iron-nickel) – Mantle.
Earth’s Interior Chapter 5 Section 1.
Plate Tectonics.
Earth’s Interior Structure
The Earth’s Structure A Journey to the Center of the Earth.
The Dynamic Earth Chapter 3, sec. 1.
Solid Earth System. The Earth is like an onion, it is made up of many layers. Although we have not been to the center of the Earth, Earthquakes, and volcanoes.
Composition (What is it made of?) Divided into 3 layers: Crust Mantle Core.
Inside the Earth Planet Earth All objects on or near Earth are pulled toward Earth’s center by gravity. Earth formed as gravity pulled small particles.
Earth’s Interior. Scientists believe the Earth formed 4.6 billion years ago. When it first formed, it was a spinning mass of rocks and dust that was loosely.
The Structure of the Earth
8.4 – E ARTH ’ S LAYERED STRUCTURE Mrs. Guzman 2/6/13.
THE EARTH’S LAYERS Continued. TO REVIEW!! The crust is less than 1% of Earth by mass. The mantle (inner and outer) represents about 68% of Earth by mass.
Work Book Quiz The outer most compositional layer of the Earth is the ________. Page 390 The _____________core is the liquid layer of the Earth’s core.
Ch.4, Sec.1 – Inside the Earth - the Earth is divided into three basic layers: the crust, the mantle & the core - the densest layer is the __________ due.
Layers of the Earth.
2 The Earth’s Structure series of layers or spheres which differ in density, chemistry (or composition) and physical properties.
Layers of the Earth. The Earth as a System Integrated system of rock, air, water, and living things. This system is divided into four parts: – atmosphere.
The Structure of the Earth
Earth’s Layers G 103. General Information -Iron,Oxyge, Silicon, & Magnesium - Deepest drill 12 km -Radius of Earth 6371 km - How do we know about the.
Inside Earth Chapter One Section 1 Plate Tectonics.
 Inner core, Outer core, Mantle asthenosphere, lithosphere, crust,
Explored through mines and wells Temperature and pressure increases with depth Earthquake (Seismic) Waves scientists are able to tell the density and.
The Layers of the Earth © Copyright M. J. Krech. All rights reserved.
Key Concepts 1 Earth’s major systems include the atmosphere, hydrosphere, biosphere, and geosphere. All four major Earth systems interact by exchanging.
1. Crust- outermost layer of Earth’s interior that consists of solid rock.
Structure of the Earth.
Standard 2 Objective 1 Handout 2
Earth’s Interior EQ: Describe the different layers of the earth. Explain how scientist learned about these layers.
The Layers of the Earth.
Layers of Earth.
The Earth’s Layers Scientists have spent many years determining what is inside the earth. Geologists can’t use x-rays to see inside the earth or.
Plate Tectonics.
Earth’s Interior.
Layers of the Earth.
Layers of Earth.
Chapter 2, Lesson 3, Earth’s Interior
Earth’s Materials and Processes-Part 8 Investigating Earth’s Interior
Earth’s Interior and Plate Tectonics
Layers of the Earth Geosphere.
Inside the Earth.
Layers of the Earth.
8.4 Earth’s Layered Structure
Chapter 1: Introducing Earth Lesson 1: Review of Earth’s System
Marine Science Unit 3: Geological Oceanography
Earth’s Interior Crust – layer of solid rock that includes both dry land and the ocean floor Mantle – made up of rock that is very hot, but solid; nearly.
The Earth’s Layers Scientists have spent many years determining what is inside the earth. Geologists can’t use x-rays to see inside the earth or.
The Composition of Earth
Chapter 2, Lesson 3, Earth’s Interior
Layers of the Earth.
The Composition of Earth
Earth’s Internal Heat.
The Structure of the Earth
Earth’s Interior Chapter 5 Section 1.
Layers of the Earth.
Chapter 2, Lesson 3, Earth’s Interior
Inside the Earth.
What is Inside the Earth?
Presentation transcript:

Figure 1.CO2

The Earth’s Structure series of layers or spheres which differ in density, chemistry (or composition) and physical properties.

Density is the relative heaviness of a substance Or how heavy something is for its size defined as the mass per unit volume usually expressed in g/cm3 EARTH HAS DENSITY STRATIFICATION

Evidence of the Earth’s Interior Composition Can only drill about 7.5 miles (earth’s radius = 4000 mi) Vents, volcanoes, variation in pull of gravity, etc. study of the shocks from distant earthquakes

Seismic Waves reveal that Earth’s Interior Is Layered If Earth were uniform (homogeneous) throughout Seismic Waves reveal that Earth’s Interior Is Layered If the density, or rigidity, of Earth increased evenly with depth Figure 3.7 Possible paths of seismic waves through Earth. (a) If Earth were uniform (homogeneous) throughout, seismic waves would radiate from the site of an earthquake in straight lines. (b) If the density, or rigidity, of Earth increased evenly with depth, seismic wave velocity would increase evenly with depth, and the waves would bend smoothly upward toward the surface. (c) If Earth were layered inside, some seismic waves would be reflected at the boundaries between layers while others were bent. Seismic evidence shows that Earth is layered. If Earth were layered inside

Compositional Layers of the Earth the Crust thin outermost layer the Mantle thick middle layer the Core densest inner layer composed mainly or iron (90%)

Figure 1.16

Figure 1.18

Continents and Ocean Basins Differ 2-3 Continents and Ocean Basins Differ Continental crust is mainly composed of granite, a light colored, lower density (2.7 gm/cm3) rock thicker Oceanic crust is composed of basalt, a dark colored, higher density (2.9 gm/cm3) volcanic rock thinner

Table 1.1

Figure 1.17

Physical Properties of the Layers Not determined only by chemical composition The behavior of the rock (brittle or plastic) is determined mainly by temperature and pressure

Effects of Pressure and Temperature on Physical State of Layers 2-1 Effects of Pressure and Temperature on Physical State of Layers Increasing pressure raises the melting point of a material. Increasing temperature provides additional energy causing material to melt. Both pressure and temperature increase toward the center of the Earth, but at different rates.

Divisions of the Earth Based Upon Physical State 2-1 Divisions of the Earth Based Upon Physical State the Lithosphere cool, rigid outer layer comprised of continental crust, oceanic crust and the uppermost cool, rigid portion of the mantle the Asthenosphere hot, slowly flowing layer of the upper mantle the Mesosphere (Lower Mantle) rigid layer, similar chemically to the asthenosphere but very different physically the Outer core thick liquid layer the Inner core solid layer (due to tremendous pressure)

Figure 1.16

What Are the Sources of Internal Heat That Keep the Asthenosphere Plastic? Radioactive decay (atoms of elements give off heat when their nuclei break apart) Internal heat moves to the surface by conduction – slow migration of heat through a material by collision of atoms And by convection – movement of heat in a fluid as it expands, becomes less dense and rises.

Figure 3.11 Convection. (a) As a pot of water heats to boiling, the heated water rises. The water falls again as it cools near the surface. (b) A tectonic plate is the cooled surface layer of a convection current in the upper mantle. Plate movement is caused by the plate sliding off the raised ridges along a spreading center and by its cool, dense leading edge being pulled downward by gravity into the mantle. Fig. 3-11, p. 57

Isostatic Adjustment http://media.pearsoncmg.com/bc/bc_0media_geo/geo_animations/isostatic-adjustment/isostatic-adjustment.html