How is a hard-boiled egg’s structure similar to the earth’s?

Inside the Earth What are the characteristics of each layer of the Earth?

What are Earth’s layers and their characteristics? crust - the rigid, rocky outer surface of the Earth, composed mostly of basalt and granite. The crust is thinner under the oceans. inner core - the solid iron-nickel center of the Earth that is very hot and under great pressure. mantle - a rocky layer located under the crust - it is composed of silicon, oxygen, magnesium, iron, aluminum, and calcium. Convection (heat) currents carry heat from the hot inner mantle to the cooler outer mantle. outer core - the molten iron- nickel layer that surrounds the inner core.

molten lithosphere Mohorovicic Discontinuity Asthenosphere

moltenPart liquid and part solid lithosphere Mohorovicic Discontinuity Asthenosphere

moltenPart liquid and part solid lithosphereIncludes the crust and upper most part of mantle (strong, rigid rock ) Mohorovicic Discontinuity Asthenosphere

moltenPart liquid and part solid lithosphereIncludes the crust and upper most part of mantle (strong, rigid rock ) Mohorovicic Discontinuity MohoBoundary between the crust and the mantle Asthenosphere

moltenPart liquid and part solid lithosphereIncludes the crust and upper most part of mantle (strong, rigid rock ) Mohorovicic Discontinuity MohoBoundary between the crust and the mantle Asthenosphereunderlying, partially molten part of the mantle, on which the plates slide (weaker, very viscous fluid)

moltenPart _____ and part _______ lithosphereIncludes the _______ ____ upper most part of ______ (strong, rigid rock ) Mohorovicic Discontinuity MohoBoundary _______ the _______ and the ________ Asthenosphereunderlying, partially ______ ______ of the ________, on which the ______ _______(weaker, very viscous fluid)

Tomographists People who write or record about seismic discontinuities.

Draw and identify each layer based on the descriptions to the right. Continental Crust - the thick parts of the Earth's crust, not located under the ocean. Lithosphere - the crust plus the rigid, upper mantle. Lower Mantle (semi-rigid) - the deepest parts of the mantle, just above the core. Mohorovicic discontinuity - separates the crust and the upper mantle. Ocean - large bodies of water sitting atop oceanic crust. Oceanic Crust - thin parts of the Earth's crust located under the oceans. Upper Mantle (rigid) - the uppermost part of the mantle, part of the Lithosphere. Upper Mantle (flowing) = Asthenosphere - the lower part of the upper mantle that exhibits plastic (flowing) properties. It is located below the lithosphere (the crust and upper mantle).

What are the characteristics of the layers of the Earth?

Oceanic and Continental Crust

The Crust Outer layer Broken into pieces called plates –W–Where plates meet it is called a “fault” –N–Nearly all earthquakes and volcanoes occur along faults Part of lithosphere 2 types of crust –O–Oceanic 0 – 6 miles thick, very dense made of basalt or volcanic rock thinnest and newest crust –C–Continental 0 – 31 miles thick less dense made of crystalline rocks such as granite thickest crust

The crust is broken into pieces called what?

Mohorovicic Discontinuity Transition region Has qualities of both the crust and the mantle

Earth’s ________ is divided into sections. crust

The place where plates meet is called a …

Brainpop!

The Upper Mantle Part of lithosphere On top of asthenosphere 6 – 250 miles thick can move and reshape through convection contains magma and Olivine partially molten –Lower mantle Silicon, magnesium, and oxygen solid

Thinnest layer of crust

The Asthenosphere Middle layer Very thick layer Hot, dense molten rock Movement of matter releases energy generated in the Earth’s interior causing earthquakes on the surface of the Earth

Molten rocks in motion

Beneath the crust

The Lower Mantle Made of silicon, magnesium, and oxygen Mostly solid

The Core 1/3 of the earth’s mass Very hot! 2 types of core: –Outer core 125 – 188 miles thick mostly liquid Conducts electricity –Inner core Completely SOLID mostly iron and nickel under lots of pressure Responsible for Earth’s magnetic field Causes a jolt in Earth’s rotation nearly every day

Solid iron

Under the mantle

Plates ride on top

Melted iron

Center of Earth

Outermost layer

These sections are known as …

Solid rock, often with caves, that has been shaped by weathering, erosion, and plate movement

Most volcanoes and earthquakes are located at the …

Summary: Earth’s Layers I already knew… I learned… I am confused about…

Use your spiral to tell your family about… Have your parent/guardian sign the line after you have discussed it.  ____________ The two types of crust and their characteristics.  ____________ Explain what the Mohorovicic Discontinuity is.  ____________ Tell someone about the difference between the lithosphere and the asthenosphere.  ___________ Explain what “molten” rock is.

The Core ____ of the earth’s mass Very hot! 2 types of core: –______ core 125 – 188 miles thick mostly ______ Conducts electricity –Inner core Completely ______ mostly iron and nickel under lots of ________ Responsible for Earth’s magnetic field Causes a jolt in Earth’s ________ nearly every day

The Lower Mantle Made of silicon, magnesium, and _____ Mostly ____

The Asthenosphere Middle layer Very ____ layer Hot, dense _____ rock Movement of matter releases _______ generated in the Earth’s interior causing __________ on the surface of the Earth

The Crust Outer __________ Broken into pieces called ___________ –W–Where plates meet it is called a “________” –N–Nearly all _________ and __________ occur along faults Part of lithosphere 2 types of crust –_–________ 0 – 6 miles thick, very dense made of ________ or volcanic rock thinnest and newest crust –C–Continental 0 – 31 miles thick less dense made of crystalline ________ such as granite thickest crust

Mohorovicic Discontinuity Transition region Has qualities of both the _____ and the __________.

The Upper Mantle Part of _________ On top of asthenosphere 6 – _____ miles thick can move and reshape through ________ contains ______ and Olivine partially molten –Lower mantle Silicon, magnesium, and oxygen solid