SCIENCE (EARTHQUAKES) Flashcards
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.
Lithosphere
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
Types of
Seismic
Waves
Body waves
P-waves (Primary)
S-waves (Secondary)
Within the Earth Body
Body Waves
Felt at surface of Earth
Surface Waves
Side to side motion
Love wave
Circular motion (Up and down)
Rayleigh wave
The Earth’s crust is made up of several pieces called __________ and most earthquakes occur along their edges.
tectonic plates