Earthquake’s Epicenter and Plate tectonics Flashcards
A point, directly above the true
center of disturbance, from
which the shock waves of an
earthquake apparently originated.
Epicenter
What is a fault?
A break in the ground which movement has taken place.
Where do earthquakes occur?
Along fault lines, cracks in Earth’s crust where tectonic
plates meet.
within the earth where an earthquake rupture starts.
Point
the study of earthquakes and seismic waves that move through and around the earth.
Seismology
An instrument that measures
and records details of earthquakes, such as force and duration
Seismograph
Magnitude
the energy released by an earthquake at the focus
an earthquake felt by people
intensity
Are the waves of energy caused by the
sudden breaking of rock within the earth or an explosion.
Seismic Waves
can travel
through the earth’s inner layers
body waves
Surface waves
can only
move along the surface of
the planet like ripples on water
Waves that arrive first at seismic facilities
P-wave/Primary wave
Waves that arrive late at seismic facilities
S-wave/Secondary waves
a __wave is slower than a __ wave and can only
move through solid rock, not through any liquid medium.
s wave, p wave
The vibration that you feel during an
earthquake is caused by …
Seismic waves
These are enormous slabs that
form the Earth’s crust and its rigid upper mantle
Plates
Earthquakes do not occur in random locations.
They usually located in certain areas. Where?
ACTIVE FAULTS
There could be sudden movements that occur on the seafloor, and that is at the ___?
trenches
The inner portion of the Earth
Core
What happens when plates grind together?
They get stuck and pressure builds up then they break loose
movements that occur in the seafloor
Trenches
