Earthquake Flashcards
The process whereby rocks bend, store and suddenly release energy.
Elastic Rebound Theory
Who proposed the Elastic Rebound Theory ?
Harry F. Reid
The energy that is released in an earthquake is in the form of vibrations.
Seismic waves
Five hazards of earthquakes?
- Fire
- Structural Collapse
- Tsunamis
- Liquefaction
- Landslides
Two types of seismic waves
- Body waves
- Surface waves
Those that travel through the interior of the earth
Body waves
When body waves reach the surface of the earth day shake the ground giving rise to
Seismic waves
Two types of body waves
1.Primary wave(p-waves)
2. S(Secondary)-waves
Waves that travel through the earth by pushing rocks in the direction they are traveling they are almost twice as fast as s-waves and can travel through solids liquids and gas
Primary wave ( P. waves)
Can travel through the earth by displacing rocks at right angles to the direction of travel they cannot pass through fluids
S( Secondary) waves
Two types of surface waves
- Rayleigh waves
- Love waves
Surface that shakes the ground up and down
Rayleigh waves
Shakes the ground side to side
Love waves
Two ways of describing an earthquake
- Intensity
- Magnitude
Refer to the Effects and damage of an earthquake
Intensity
Is the measure of the energy released by an earthquake
Magnitude
The first intensity scale was developed by
Giuseppe Merealli
Intensity scale was developed in
1902
Intensity scale uses what numerals?
Roman numerals
What do scientists use to measure magnitudes?
Seismograms
The magnitude is expressed using the
Richter scale
Seismograms uses what numerals?
Hindu Arabic Numerals
It’s a vibration of the earth due to the rapid release of energy
Earthquake
Is a breaks in the earth’s crust
Fault
Is the origin or the center of the earthquake
Focus
The point on the surface of the earth
Epicenter
