science 6a/b

Question 1

early warning systems

Answer 1

help to warn but cannot predict

Question 2

earthquake

Answer 2

any type of shaking of the ground that is mesurable by seismic instruments

Question 3

divergent boundary

Answer 3

plate sections are moving/spreading apart

Question 4

convergent boundary

Answer 4

plate sections are moving towards each other

Question 5

strain

Answer 5

distortion, bending, or compression of a material (rocks) under stress

Question 6

ductility

Answer 6

amount of strain a material can endure without breaking

Question 7

what happens when rocks break

Answer 7

joints form, weak seismic waves are produced

Question 8

strike

Answer 8

direction of the fault

Question 9

dip

Answer 9

angle of the fault face downward from the horizontal

Question 10

solid line

Answer 10

location is certain/visible on the surface

Question 11

where are most fault lines in the us

Answer 11

mountain ranges

Question 12

dip-slip fault

Answer 12

fault’s motion is parallel to its dip

Question 13

strike-slip fault

Answer 13

only motion is horizontal

Question 14

where are most earthquakes

Answer 14

less than 70km/45mi