CH 25

Question 1

a range of a mountain in the sea

Answer 1

mid ocean ridge

Question 2

peakes at the mid ocean ridge

Answer 2

rift valley

Question 3

the boundary where two plates collide

Answer 3

covergent plate boundary

Question 4

the denser plate

Answer 4

subduction

Question 5

horizontally plates passing eachother but opposite direction

Answer 5

transform plate boundary

Question 6

two plates moving apart

Answer 6

divergent plate boundary

Question 7

a sudden movement or vibration of the earth

Answer 7

earthquake

Question 8

a crack of the earth’s crust

Answer 8

fault

Question 9

sudden release of strain energy to a fault

Answer 9

elastic bound

Question 10

were the earthquake starts

Answer 10

focus

Question 11

the point on earth surface directly above the focus

Answer 11

epicenter

Question 12

whats the 3 peices of evidence?

Answer 12

cost line match up like a puzzle
found large animal fossils
mountain ranges match up and the rocks are made up as the same composition and age

Question 13

what was the name of the super continent?

Answer 13

pangaea

Question 14

who cameup with the Seafloor Spreading Hypothesis?

Answer 14

Harry Hess used sonar

Question 15

who discovered the mid-ocean ridge?

Answer 15

Harry Hess

Question 16

Where at the bottom of the sea is the youngest rock found?

Answer 16

near the MOR

Question 17

what are the types of plate boundries?

Answer 17

divergent convergent and transform

Question 18

What two types of crust are involved in plate movement?

Answer 18

oceanic crust and contintental crust

Question 19

what types of land forms when oceanic and contintental crust converge?

Answer 19

valcanoes

Question 20

what can be created when two oceanic crusts converge?

Answer 20

deep see trench

hotspots (land)

Question 21

what landforms are created when two continental crusts form.

Answer 21

mountains

Question 22

how do divergent plate boundries move?

Answer 22

they seperate

Question 23

what are the two examples of divergent plate boundries?

Answer 23

MOR (oceanic only)

Question 24

how do tranform plate boundaries move?

Answer 24

moves horizontally

Question 25

what types of plate boundaries have shallow earthquakes

Answer 25

divergent and transform

Question 26

which plate boundary has deeper earthquakes?

Answer 26

convergent plate boundaries

Question 27

what are the four types of stress that rocks have?

Answer 27

compression stress
tension stress
shear stress
torsion stress

Question 28

what are the types of deformation?

Answer 28

elastic deformation

plastic deformation

Question 29

what happens to the rock if elastic deformation occurs?

Answer 29

soon as stress is released it returns to its original shape

Question 30

what happens to the rock if plastic deformation occurs

Answer 30

when stress is released it remains in the same shape

Question 31

what type of seismic waves are there?

Answer 31

primary waves
secondary waves
surface waves

Question 32

what type of material can s- waves move through

Answer 32

only solids

Question 33

what are the two scales that help us measure earthquakes?

Answer 33

merricelli

ritcher

Question 34

what does the rictor scle measure?

Answer 34

the amount of energy released

Question 35

what did marcalli cause

Answer 35

damage