Science Volcano/ EQ's

Question 1

focus

Answer 1

the point along a fault at which the first motion of the EQ occurs

Question 2

epicenter

Answer 2

the point on earths surface directly above and EQ’s starting point, or focus

Question 3

elastic rebound

Answer 3

the sudden return of elastically deformed rock to its undeformed shape

Question 4

magnitude

Answer 4

a measure of strength of an EQ

Question 5

intensity

Answer 5

a measure of the degree to which an EQ is felt by people and amount of damage caused

Question 6

body wave

Answer 6

seismic waves that travel through earths interior

Question 7

surface waves

Answer 7

move along earths surface and produce motion mostly in upper kilometers of earths crust

Question 8

do EQs only occur in faults?

Answer 8

Yes

Question 9

do EQs only occur along tectonic plate boundaries?

Answer 9

No - not all faults are located at tectonic plate boundaries

Question 10

fault

Answer 10

a break in a body of rock along whic one block slides real stick to another