Chapter 25

Question 1

The MOR system in the Atlantic ocean,called the Mid-Atlantic Ridge

Answer 1

mid-ocean ridge

Question 2

A long narrow depression forms in between peaks along the mid-ocean ridge.

Answer 2

rift valley

Question 3

the boundary where two plates collide

Answer 3

convergent plate boundary

Question 3

the point of origin for an earthquake

Answer 3

focus

Question 4

when a thick and buoyant continental plate meets a thin and dense oceanic plate the denser plate dives beneath the continent

Answer 4

subduction

Question 5

divergent plate boundary

Answer 5

the boundary between two plates that are moving apart

Question 6

this 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 Earth’s crust called faults.

Answer 7

earthquake

Question 8

a crack in Earth’s crust strain energy builds up in the rock has moves

Answer 8

fault

Question 9

the sudden release of strain energy as rock moves along a fault

Answer 9

elastic rebound

Question 10

the point on Earth’s surface directly above the focus

Answer 10

epicenter

Question 11

who came up with the continental drift hypothesis?

Answer 11

Alfred Wegener

Question 12

what where some pieces that supported his hypothesis ?

Answer 12

1,coastline matched like puzzle piece

2. he looked at large land animal fossils
3. mountain ranges matched up had similar rock type and age

Question 13

what was the name of the super cont

Answer 13

Pangaea

Question 14

who came up with the Seafloor spreading Hypothesis?

Answer 14

Harry Hess

Question 15

What did he use to come up with the Seafloor spreading hypothesis?

Answer 15

sonar

Question 16

Who discovered the Mid-Ocean ridge?

Answer 16

Harry Hess

Question 17

where can we find the youngest rock on the seafloor?

Answer 17

close to the MOR

Question 18

what are the three of the plate boundaries?

Answer 18

convergent
divergent
transform

Question 19

what are the two type of crust that deal with in class

Answer 19

oceanic crust

continental crust

Question 20

How do convergent plates boundaries move?

Answer 20

collide together

Question 21

what land forms are created when ocean crust and continental crust converged?

Answer 21

volcanoes

deep sea trench

Question 22

subuduction happen with which type of boundary?

Answer 22

convergent

Question 23

what type of land forms when two oceanic crust come together?

Answer 23

deep sea trench

hot sports which create lands

Question 24

what type of land forms are created when two continental come together?

Answer 24

Mountains

Question 25

what kind of crust must be present for Volcanic activity to occur?

Answer 25

oceanic crust

Question 26

How do divergent plates move?

Answer 26

they divide/ move away from each other

Question 27

what are specific example of a divergent plate boundaries?

Answer 27

MOR ( both are oceanic crust ) | East African Rift ( both continental)

Question 28

how do transform plates move?

Answer 28

slide pasted each other

Question 29

what a specific example of a transform plate boundaries?

Answer 29

San Andreas fault ( both continental)

Question 30

what is a convection current?

Answer 30

1. Magma heats up , becomes less dense and rise | 2. Magma cools down, becomes more dense and sinks

Question 31

what are other forces that help plates in motion?

Answer 31

slab pull ridge push and friction

Question 32

which type of plate boundaries have shallow earthquakes?

Answer 32

divergent | transform

Question 33

which plate boundaries have deep earthquakes?

Answer 33

convergent

Question 34

what type of stress can be applied to rocks to cause movement?

Answer 34

compression stress tension stress shear stress torsion stress

Question 35

what are the types of deformation that can be cause do to stress?

Answer 35

Elastic | plastic

Question 36

what happens to a material when elastic deformation happens?

Answer 36

deforms then snaps back in place

Question 37

what happens to a material when plastic deformation happens?

Answer 37

deforms then changes into a new shape

Question 38

how many types of seismic waves are there?

Answer 38

1 primary waves 2 secondary waves 3 surface waves

Question 39

which waves are the fastest wave ?

Answer 39

primary waves

Question 40

what type of wave is the p-waves?

Answer 40

a compression wave

Question 41

what type of materials can a p wave travel through?

Answer 41

solid | liquid

Question 42

what type of wave is a secondary wave ?

Answer 42

transverse

Question 43

what type of of materials can a s -wave travel through?

Answer 43

solid

Question 44

which wave is the most complex and damaging?

Answer 44

surface waves

Question 45

what are the names of the measurement we use to measure earthquakes?

Answer 45

Richter scale | Mercalli scale

Question 46

what does the Richter scale measure about an earthquake?

Answer 46

the amount of energy released

Question 47

what dose the Mercalli measure in an earthquake?

Answer 47

the amount of damage that was caused