Exam- Earthquakes Flashcards
Total force acting on crustal rock per unit
Stress
The deformation of material caused by stress
Strain
Material is compressed stretched or bent, but returns to its original shape when stress is removed
Elastic deformation
Material is compressed stretched or bent but stays deformed when stress is removed
Plastic deformation
Primary wave push ways these waves travel the fastest and can travel to any material
P-waves
Secondary waves snake waves travel the second fastest travel through solids but not liquids
S-waves
Surface waves travel along the earth surface these cause the most damage
L-waves
A break or crack in the crest movement along this crack is the cause of earthquakes
Fault
What are most faults located along
Plate boundaries
What are the three types of faults
Strike slip, thrust, and normal
The actual spot in the crust where the earthquake occurred
Focus
Point on the earth’s surface directly above the focus
Epicenter
Instrument used to record earthquake waves
Seismograph
Scale used to describe the amount by of energy given off by an earthquake
Richter scale
The amount of energy is called the ___________
Magnitude
