chapter 25

Question 1

Hess discovered a system of mountain ranges on the seafloor separated by valleys .

Answer 1

mid-ocean ridge

Question 2

A long, narrow depression called?

Answer 2

Rift valley

Question 3

The boundary where two collide

Answer 3

Convergent plate boundary

Question 4

When 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

the boundary between two plates that are moving apart.

Answer 5

divergent plate boundary

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 the occurs when rock slip and slide along enormous cracks in Earths crust called faults

Answer 7

earthquake

Question 8

is a crack in earths crust along which rock has moved.

Answer 8

fault

Question 9

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

Answer 9

elastic rebound

Question 10

The point of origin for an earthquake

Answer 10

force

Question 11

The point on earths surface directly above the 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 matches 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

Sunduction only happens with which type of plate boundary

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

Answer 23

voicanoes and deep sea trench

Question 24

what land forms can be formed when two oceanic crust collide

Answer 24

Hot Spots= They create island also create deep sea trench

Question 25

what land form is created when two continental collide or converge

Answer 25

Mountains

Question 26

what types 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 tow continetal crust)

Question 29

how do transform plates boundaries move

Answer 29

the slide by each other

Question 30

what is an specific example of a transform plate boundary

Answer 30

San Andreas fault ( two continental crust)

Question 31

d

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 two types of boundaries have shallow earthquakes

Answer 33

Divergent and tranform

Question 34

which boundary has deep earthquakes

Answer 34

convergent

Question 35

what are the types of stress that could be applied to rocks

Answer 35

compression stress tension stress shear stress torsion stress

Question 36

what are the two types of deformation

Answer 36

Elastic and Plastic

Question 37

what happens to a rock during elastic deformation happens

Answer 37

It deforms then returns to its original shape

Question 38

what happens to a rock during plastic deformation happens

Answer 38

it deforms and doesnt go back to the stay shape

Question 39

what are the types of seismic waves

Answer 39

Primary Secondary Surface

Question 40

which type of seismic wave moves fastest

Answer 40

Primary

Question 41

How do primary waves move

Answer 41

They are compression waves

Question 42

what types of materials does primary waves move through

Answer 42

solids and liquids

Question 43

how do secondary waves move

Answer 43

they are transverse waves

Question 44

what type of material does secondary waves move through

Answer 44

only solids

Question 45

Which type of wave is most complex and causes the most damage

Answer 45

surface waves

Question 46

what are the two scales to measure earthquakes

Answer 46

Richter scale | Mercalli scale

Question 47

what does the richter scale tells us about a earthquake

Answer 47

Tells us the amount of energy released