Layers Of The Earth And Plate Tectonics

Front 1

crust

Back 1

the crust is the outer most layer of the earth. made up of two types continental and oceanic

Front 2

continental

Back 2

made out of silicon, oxygen, and aluminum. Less dense and thicker

Front 3

oceanic

Back 3

made from silicon, oxygen, aluminum, magnesium, and calcium. More dense, thinner

Front 4

mantle

Back 4

made from more magnesium, calcium and less aluminum, silicon. three parts lithosphere, asthenosphere, and mesophere.

Front 5

lithosphere

Back 5

made up of plates. Top of mantle. Coolest, least pressure

Front 6

asthenosphere

Back 6

middle of mantle. Plasticity weak

Front 7

Mesophere

Back 7

lower part of mantle. Less plasticity. Convection currents

Front 8

plasticity

Back 8

means it can move

Front 9

Core

Back 9

made of Nickel ,iron. 2 parts outer core and inner core

Front 10

Outer core

Back 10

made out of iron. Only liquid layer in the earth

Front 11

Inner core

Back 11

Made of iron, nickel. Solid layer, pressure keeps it solid, hotter than the sun

Front 12

convergent

Back 12

pushing together

Front 13

Divergent

Back 13

pulling apart

Front 14

seafloor spreading

Back 14

sea floor spreading is when the seafloor spreads apart magma starts coming up because of this

Front 15

3 ways plates can move

Back 15

1. ridge push

2. slab pull

3.convection currents

Front 16

Ridge push

Back 16

happens from seafloor spreading pushes the plates apart

Front 17

Slab pull

Back 17

occurs from subduction it happens when one plate goes under another causing the plate and pulling the other plate down with it

Front 18

Convection currents

Back 18

the rock gets heated and becomes less dense because of this it rises and cools it becomes more dense because of this it falls