Chapter 25

Question 1

a system of mountains ranges on the seafloor separated by valleys

Answer 1

mid-ocean ridge

Question 2

a long, narrow depression forms between peaks along the mid ocean ridge

Answer 2

rift valley

Question 3

the boundary where two plates collide

Answer 3

convergent plate boundry

Question 4

when a thick continental plate meets a thin oceanic plate, the denser plate dives beneath the continent in this process

Answer 4

subduction

Question 5

the boundary between two plates that are moving apart

Answer 5

divergent plate boundary

Question 6

the type of boundary where plates slide horizontally past each other in opposite directions

Answer 6

transform plate boundary

Question 7

the sudden movement or vibration of the ground that occurs when rocks slip and slide along enormous cracks in the Earth´s crust called faults

Answer 7

earthquake

Question 8

a crack in the Earth´s crust along which rock has moved

Answer 8

fault

Question 9

sudden release of strain energy and moves along a fault

Answer 9

elastic bound

Question 10

the point of origin for an earthquake

Answer 10

focus

Question 11

the point on Earth´s surface directly above the focus

Answer 11

epicenter

Question 12

who came up with the continental hypothesis?

Answer 12

Alfred Wegener1

Question 13

what were some pieces of evidence that supported his hypothesis

Answer 13

1) the coast lines matched up like puzzle pieces
2) he looked at large animal fossils
3) mountain ranges matched up and they had simillar rock size and age

Question 14

what was the name of the super continent?

Answer 14

Pangaea

Question 15

who came up with the seafloor spreading hypothesis?

Answer 15

Harry Hess

Question 16

how did he come up with the seafloor spreading hypothesis?

Answer 16

he used sonar

Question 17

Who discovered the mid ocean ridge?

Answer 17

Harry Hess

Question 18

where will younger rock be created on the sea floor

Answer 18

closer too the mor

Question 19

what are the 3 types of plate boundaries.

Answer 19

divergent boundary
convergent boundary
transform boundary

Question 20

what are the two types of crust that will be used in any type of plate boundary

Answer 20

oceanic crust and continental crust

Question 21

how do conversion plates move?

Answer 21

they move together

Question 22

what land forms are created when continental and oceanic crust convert?

Answer 22

deep sea trench

Question 23

subduction only happen with which type of plate boundary

Answer 23

convergent plate boundary

Question 24

what type of land forms can be created when two oceanic crusts come together

Answer 24

1) deep sea trenches

2) hot spots

Question 25

what type of land forms can be created when two continental crust

Answer 25

mountains

Question 26

what type of crust has to be present for volcanic activity to occur

Answer 26

oceanic crust

Question 27

which type of plate boundarys have shallow earthquakes.

Answer 27

divergent and transfrom

Question 28

which type of plate boundaries have deep earthquakes

Answer 28

convergent

Question 29

what types of stress can be applied to rocks to created movement

Answer 29

compression stress, a tension stress, a shear stress, and torsion stress

Question 30

what are the types of deformation that can be caused due to stress

Answer 30

elastic deformation and plastic deformation

Question 31

what happens during elastic deformation

Answer 31

when something gets deformed but returns to its returns to its original shape

Question 32

what happens during plastic deformation

Answer 32

when something gets deformed but doesnt return to its original form

Question 33

how many types of seismic waves are there

Answer 33

3(primary waves, secondary waves, surface waves)

Question 34

which wave moves at the fastest speed

Answer 34

primary waves

Question 35

what type of wave is a p wave

Answer 35

compression wave

Question 36

what type of material can p waves travel through

Answer 36

solids and liquids

Question 37

what type of wave are secondary waves

Answer 37

transverse wave

Question 38

what type of material can s waves travel through

Answer 38

only solids

Question 39

which wave is more complex and causes the most damage

Answer 39

surface waves

Question 40

what are 2 scales that help measure earthquakes

Answer 40

richter scale and the mercalli scale

Question 41

what does the richter scale measure in an earthquake

Answer 41

the amount of energy released

Question 42

what does the mercalli scale tell us about an earthquake

Answer 42

the amount of damaged caused