chapter 25

Question 1

System of mountain ranges on the seafloor separated by valleys

Answer 1

mid-ocean ridge

Question 2

forms in between peaks along the mid ocean ridge

Answer 2

rift valley

Question 3

where two plates collide

Answer 3

convergent plate boundary

Question 4

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

Answer 4

subduction

Question 5

divergent plate boundary boundary between two plates that are moving apart

Answer 5

divergent plate boundary

Question 6

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

Answer 6

transform plate boundary

Question 7

sudden movement or vibration of the ground that occurs when rocks slip and slide

Answer 7

earthquake

Question 8

a crack in earths crust along which rock has moved

Answer 8

fault

Question 9

release of strain energy as rock moves along a fault

Answer 9

elastic

Question 10

point of origin for an earthquake

Answer 10

focus

Question 11

point earths surface directly above focus

Answer 11

epicenter

Question 12

Who came up with the continental drift hypothesis?

Answer 12

Alfred Wegener

Question 13

What where some pieces of evidence that supported his hypothesis?

Answer 13

Large land animal fossils
coast lines matched up
mountain ranges matched up;and the same rock composition

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

What did he use to help him create a map of the seafloor?

Answer 16

Sonor

Question 17

Who discovered the mid-ocean ridge?

Answer 17

Harry Hess

Question 18

Where will you find younger rock?

Answer 18

closer to the MOR or near the MOR

Question 19

What are the three types of plate boundaries?

Answer 19

Divergent boundary
Convergent boundary
Transform boundary

Question 20

Subduction only happens with which type of plate boundaries?

Answer 20

convergent

Question 21

tending move toward one point or approach each other

Answer 21

convergent

Question 22

What are the two types of crust involved in plate movement?

Answer 22

Oceanic crust

Continental crust

Question 23

what land forms can for when oceanic crust and continental crust convert?

Answer 23

volcanoes and deep sea trench

Question 24

What land forms can be formed when to oceanic crust collide?

Answer 24

Hot Spots = They create islands also create deep sea trench

Question 25

What land form is created when two continental collide or converge?

Answer 25

Mountains

Question 26

what type of crust must be present for volcanoes active to occur?

Answer 26

oceanic crust

Question 27

How do divergent plates boundaries move?

Answer 27

They come apart they divide

Question 28

What are two examples of divergent plate boundaries?

Answer 28

mid ocean ridge MOR (made up oceanic crust) The East African Rift (made up of two continental crust)

Question 29

How do transform plates boundaries move?

Answer 29

they slide by each other

Question 30

What is an specific example of a transform plate boundary?

Answer 30

San Andreas fault ( two continental crusts)

Question 31

nj

Question 32

how do convention currents work?

Answer 32

1. magma heats up,becomes less dense then rises | 2. magma cools becomes more dense and goes down

Question 33

What are the other forces that cause plate movement or helps with plate movement?

Answer 33

Slab pull Ridge push Friction

Question 34

What are two types of boundaries shallow earthquakes?

Answer 34

Divergent and Transform

Question 35

Which type of plate boundaries have deep earthquakes?

Answer 35

Convergent

Question 36

What are the type of stresses can be applied on rocks?

Answer 36

compression stress

Question 37

What are the two types of deformation?

Answer 37

Elastic Deformation | Plastic Deformation

Question 38

what happens to a rock during elastic deformation?

Answer 38

It deforms then returns

Question 39

what happens to a rock during plastic deformation?

Answer 39

It stays deformed

Question 40

what are the seismic waves?

Answer 40

Primary Secondary Surface

Question 41

which type of seismic waves move fastest?

Answer 41

primary

Question 42

how do primary waves move?

Question 43

what type of materials do do waves move in?

Answer 43

solids and liquids

Question 44

how do secoundary waves moves?

Answer 44

they are trans verse

Question 45

what type of materials do secondary move?

Answer 45

trans verese waves

Question 46

which type of wave is more complex and causes the most damage?

Answer 46

surface waves

Question 47

What are the two scales to measure earthquakes ?

Answer 47

Richter Scale | Mercalli Scale

Question 48

what does the Richter scale tell us about an earthquake?

Answer 48

amount of energy released