Places Where Earthquakes Occur Flashcards
(29 cards)
These are the major and minor blocks of rocks
Tectonic Plates
Composed of crust and uppermost part of the mantle, a rigid layer that can break under stress.
Litosphere
a sheet, quantity, or thickness of material, typically one of several, covering a surface or body.
Layers
The thinnest layer of the earth, separated by 2 types - Continental and Oceanic
Crust
The thickest layer of the earth, made mostly out of silicate and heavy metals such as iron, nickel, magnesium and others
Mantle
Third layer of the earth, made out of metals such as iron and nickel. The only liquid layer of earth.
Outer Core
The innermost layer of the earth, a hot solid ball of
( mostly ) iron.
Inner core
Are the waves of energy caused by the sudden breaking of rock within the earth or an explosion.
Seismic Waves
instrument that records seismic waves
Seismograph
Location on the Earth’s surface above the earthquake’s origin.
Epicenter
Point inside Earth’s crust where the earthquake starts.
Focus
What are the 2 types of Body Waves?
P - Waves / S - Waves
Movement: (Back and forth) and FAST
P - Wave
Movement:
(Up and down) and SLOW
S - Waves
Is a wave within the Earth Body
Body Wave
a wave felt at surface of Earth
Surface Waves
a type of wave
Movement:
Side to side motion
Love Wave
Movement:
Circular motion (Up and down)
Rayleigh Waves
_____ passes through the solid, semi-solid, and liquid layers of the earth.
P - Wave
a type of wave
passes through the solid and semi-solid layers of the earth.
S - Wave
Earthquakes occur along _____ which are fractures between blocks of rock that allow the blocks to move relative to one another.
Faults
The Earth’s crust is made up of several pieces called ____ and most earthquakes occur along their edges.
Tectonic Plates ( 2 )
The plates under the ocean is called ____
Oceanic Plate
Plates that are not under the ocean are ____
Continental Plates
