Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Elastic limit |
Max amount of strain that an object can accumulate before fracturing or undergoing deformation. |
|
|
Body waves |
Underground waves that spread in a spherical shape like a firework. |
|
|
Surface waves |
Waves that move along the surface once the body waves reach it. |
|
|
P-Waves |
Type of body wave where particles vibrate in the same direction that the wave is traveling (compressing and decompressing). |
|
|
S-Waves |
Type of body wave where particles vibrate perpendicular to the direction that the wave is traveling (side to side motion) |
|
|
Rayleigh waves |
Type of surface wave where particles vibrate in the same direction as the wave and also up and down (rolling motion) |
|
|
Love waves |
Type of surface wave where particles vibrate back and forth and side to side at the same time. |
|
|
Inertia |
Objects at rest stay at rest and objects in motion stay in motion until acted on by outside force. |
|
|
Mercalli intensity scale |
A quantitative means of ranking the intensity of earthquakes based on first-hand human observations, particularly the amount of structural damage. |
|
|
Richter magnitude scale |
The original magnitude scale, developed by Charles Richter and Beno Gutenberg, used to quantify the amount of ground motion. |
|
|
Subduction zone earthquakes |
Earthquakes that occur when an oceanic plate is overridden by another plate, generating some more powerful earthquakes. |
|
|
Natural vibration frequency |
The frequency at which a building will naturally vibrate when the ground shakes during an earthquake. |
|
|
Wave attenuation |
The steady decrease in seismic wave energy that occurs as the waves travel away from their point of origin at the focus |
|
|
Ground amplification |
When seismic waves encounter weaker materials and begin to slow down, causing an increase in wave amplitude and ground shaking |
|
|
Seismic gap |
A tool for predicting the likelihood of an earthquake, based on sections of an active fault where the strain has not been released for an extended period of time. |
