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Flashcards in Escoje Deck (25):
1

α = √ (κ + 4/3μ) /ρ is the equation for the velocity of a ______.

P-Wave

2

κ is the symbol for (el symbolo de):______.

bulk modulus [compressibility]

3

μ is the symbol for (es el symbolo de):______.

shear modulus [rigidity]

4

ρ is the symbol for (es el symbolo de):_____.

Density

5

Rock or soil strength measures the ability to resist:

Stress

6

A material which fails after little permanent strain is:

Brittle

7

Nonpermanent, instantaneous strain is:

Elastic

8

Fractures along which there has been no appreciable displacement are____.

Joints

9

Deformation structure in the Mona Canyon is:

normal fault/graben

10

The point of origin of the earthquake below the surface is called:

Focus

11

The seismic wave amplitude is combined with the distance between the earthquake source and the seismic station to determine:

Magnitude

12

The deepest earthquakes occur:

in subduction zones

13

The last destructive earthquake to affect PR was located in

Mona Canyon

14

Seismic waves are produced during faulting by:

Elastic Rebound

15

The seismic low velocity zone below 100 km is called:

Asthenosphere

16

The seismic wave amplitude is combined with the distance between the earthquake source and the seismic station to determine:

Magnitude

17

Mass movements that occur in channels are called:

Debris flows

18

Two houses in Guanica were damaged during the Mameyes event (Oct. 1985) by:

Debris flows

19

Cut off river meander bends are called:

Oxbows

20

The amount of water that flows through a stream channel cross section per unit time is a measure of

stream discharge

21

Increased discharge of a river results in:

increase in all three (velocity,depth,width)

22

Sedimentary deposits on the inside of curve of river meanders are called:

point bars

23

The slowest near surface movement of soil down slope caused by expansion and contraction is called:

Creep

24

The Mameyes landslide was caused by:

heavy rains

25

Fractures along which there has been no appreciable displacement are:

Joints