earthquakes

Question 1

how many seismic stations are needed to find epicenter

Answer 1

3

Question 2

what is subduction

Answer 2

occurs when one plate dives down beneath another

Question 3

what is a focus

Answer 3

point in the earth’s crust where earthquake originates

Question 4

what is the outer core

Answer 4

liquid iron part of earth

Question 5

what is a trench

Answer 5

forms in ocean in subduction zones

Question 6

what is the inner core

Answer 6

solid iron and nickel

Question 7

what is a seismograph

Answer 7

device used to detect earthquake waves

Question 8

what is another name for s waves

Answer 8

shear waves

Question 9

what is another name for p waves

Answer 9

compressional waves

Question 10

which wave arrives first

Answer 10

p wave

Question 11

which wave is faster

Answer 11

p wave

Question 12

what can p waves travel through

Answer 12

anything(solids+liquids)

Question 13

what can s waves travel through

Answer 13

solids only

Question 14

what is an epicenter

Answer 14

points on the surface of earth directly above the earthquake’s focus

Question 15

what is a shadow zone

Answer 15

area on earth’s surface where neither p or s waves come

Question 16

what is the sea floor made of

Answer 16

basalt

Question 17

whats basalt

Answer 17

what the sea floor is made of