Plate Tectonics Flashcards
It is the third planet from the Sun.
Earth
It is made up of 70% water and 30% land.
Earth’s surface
Identified according to their chemical components.
Compositional Layers
Examples of Compositional Layers
Crust, Mantle, and Core
Identified according to their physical properties.
Mechanical Layers
Examples of Mechanical Layers
Lithosphere, Asthenosphere, Mesosphere, Outer core, and inner core
The outermost and thinnest layer of the earth.
Crust
This layer makes up 1% of Earth.
Crust
Habitable and Widely studied layer
-Oceanic and Continental Crust
Crust
The Thickest layer is semi-solid, rocky, and viscous.
Mantle
900-3700 degree celcius
Mantle
-Viscous because of temperature difference
-Made of hot and dense rock
-Convection cells
Mantle
-Molten Nickle and Iron
-3700-4300 degree celcius
-Only the liquid layer
Outer core
-Mostly Iron
-Has a high temperature and pressure
-Solid layer
-About 6000 degree
Inner core
The cycle of heating, rising, cooling, and sinking.
Convection current
-Made up of the crust and upper mantle.
-Divided into several parts called “tectonic plates”
Lithosphere
Lies beneath the Lithosphere
Makes up the upper mantle
The pressure and temperature in this layer cause the deformation of rocks.
Asthenosphere
Made up of the lower mantle
The flow of rocks in this layer is much slower.
Mesosphere
Caused by the movements inside the earth.
Seismic waves
The transition zone between the crust and mantle
Mohorovicic Discontinuity
The transition zone between the mantle and core
Guttenberg
The transition zone between the outer core and inner core
Lehmann
Can travel through the earth’s inner layers
Body waves
Can only travel through the planet’s surface like ripples in the water.
Surface waves
