Layers of Earth 🌍 Flashcards
Physical Layers of Earth
The lithosphere, asthenosphere, mesosphere, outer core and inner core.
Chemical Layers of Earth
Crust, Mantle, Core
Upper Mantle
Lithosphere, Asthenosphere,
Lower Mantle
Mesosphere
Core
Outer and inner core
Seismic waves are?
Waves of energy that travel through the Earth’s layers.
The seismic waves can be read how?
These waves can be read by seismometers and show up as wavy lines.
What is telling us the size of the lines?
The size of the line can tell us what type of material it moved through.
What is the pressure?
The amount of force pushing on a certain area.
Crust
Earth’s outermost layer of solid rock that includes land and ocean floor
Lithosphere
Rigid upper most part of the mantle and the crust
Lithosphere
Solid and broken up into plates.
These plates are constantly moving and slowly moving away or bumping in to one another.
Asthenosphere
Consists of partly molten rock.
It is the part of the upper mantle that flows easily.
This movement is called plasticity.
Convection Currents occur here.
Convection currents
Convection is responsible for the movement of the plates that make up the Lithosphere.
Mesosphere
Also called Lower Mantle
Is the largest part of the mantle.
Mesosphere
It is more rigid than asthenosphere. .
Thicker than the UM & Asthenosphere
Core
Innermost part of the earth consisting of 2 parts
Made up of mostly iron and nickel
Outer core
Thick liquid, molten material of Iron and Nickel.
These liquid metals create Earth’s Magnetic Field
Earth’s Magnetic Field
Moving molten Nickel and Iron from our outer core creates magnetism that surrounds the Earth in an invisible field.
Earth’s Magnetic Field
Our magnetic field blocks solar radiation from entering our Earth.
Without it protecting us, there would be no water or life on Earth.
Aurora Borealis
When solar radiation enters our magnetic field at the North and South poles, it creates an amazing light display.
Inner Core
The inner core is a dense ball of solid metal
Made of iron
