ChapC1.1

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Information about ChapC1.1

Published on February 12, 2008

Author: stviator4b

Source: slideshare.net

Description

Earth's Surface

Earth’s Structure

Earth’s Layers Earth is made of 3 layers crust, mantle, and core crust is the layer we walk on includes the ocean floor and continents mantle is the layer under the crust thickest layer of the planet mostly made of solid rock some is partly melted and flows very slowly like a thick liquid core is deep inside the Earth dense ball made mostly of iron and nickel (metals)

Earth is made of 3 layers

crust, mantle, and core

crust is the layer we walk on

includes the ocean floor and continents

mantle is the layer under the crust

thickest layer of the planet

mostly made of solid rock

some is partly melted and flows very slowly like a thick liquid

core is deep inside the Earth

dense ball made mostly of iron and nickel (metals)

Inside the Earth core can be divided into 2 layers inner core : solid ball made mostly of iron and nickel it is the hottest layer of Earth outer core : pool of hot, liquid metal mantle some parts are solid rock others are partly melted

core can be divided into 2 layers

inner core : solid ball made mostly of iron and nickel

it is the hottest layer of Earth

outer core : pool of hot, liquid metal

mantle

some parts are solid rock

others are partly melted

crust outer layer made of rocks and soil where you live forms ocean floors

crust

outer layer

made of rocks and soil

where you live

forms ocean floors

How Plates Move Earth’s crust and upper mantle are broken into continent-sized slabs called plates plates move slowly across Earth’s surface on a thin layers of partly melted mantle move only a few centimeters a year

Earth’s crust and upper mantle are broken into continent-sized slabs called plates

plates move slowly across Earth’s surface on a thin layers of partly melted mantle

move only a few centimeters a year

plates can move away from each other usually happens on the ocean floor new ocean floor crust forms ex. Mid-Atlantic Ridge in the Atlantic Ocean plates can move toward each other mountains formed this way sometimes one plate is pushed below the other plate forms volcanos crash head on material on plates wrinkles and forms high mountains ex. Himalaya Mountains of Asia

plates can move away from each other

usually happens on the ocean floor

new ocean floor crust forms

ex. Mid-Atlantic Ridge in the Atlantic Ocean

plates can move toward each other

mountains formed this way

sometimes one plate is pushed below the other plate

forms volcanos

crash head on

material on plates wrinkles and forms high mountains

ex. Himalaya Mountains of Asia

plates moving past each other rocks along cracks stick as plates slide past each other and then move suddenly when they become unstuck causes earthquakes ex. San Andreas fault

plates moving past each other

rocks along cracks stick as plates slide past each other and then move suddenly when they become unstuck

causes earthquakes

ex. San Andreas fault

Summary Earth is made of 3 layers crust is the outer layer mantle is the middle layer core is the inner layer Earth’s crust and upper mantle are broken into giant plates that move slowly

Earth is made of 3 layers

crust is the outer layer

mantle is the middle layer

core is the inner layer

Earth’s crust and upper mantle are broken into giant plates that move slowly

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