CH 25

Question 1

(MOR) system system of mountain ranges on the seafloor seperated by valleys

Answer 1

mid-ocean ridge

Question 2

a long, narrow depression

Answer 2

rift valley

Question 3

the boundary where two plates collide

Answer 3

convergent plate boundary

Question 4

the denser plate dives beneath the continent in 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 the opposite directions

Answer 6

transform plate boundary

Question 7

is a 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

is a crack in earths crust along which rock has moved

Answer 8

fault

Question 9

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

Answer 9

elastic rebound

Question 10

the point of origin for an earthquake

Answer 10

focus

Question 11

the point on earths surface directly above focus

Answer 11

epicenter

Question 12

who came up with contentail drift hypothesis

Answer 12

Alfred wegener

Question 13

what are some evidence for the Continental drift

Answer 13

1: Alfred wegener observed that the eastern coastline and the south america fit together like a puzzle peace
2: wegener argued that you could match rock types , Fosels

Question 14

what was the name of the supper continental drift

Answer 14

1: Pangaea

Question 15

who came up with the seafloor spreading hypothesis

Answer 15

harry Hess used some sonar to discover three dimensional maps (M O R) was found

Question 16

how did harry Hess find the seafloor ?

Answer 16

he discovered an mid-ocean ridge

Question 17

where at on the ocean floor were is the newer rock formed

Answer 17

closer to the ( M O R ) is where the new rock is formed where magma is continues to form and get bigger and the sea floor spreads and when the magma meets the ocean floor it cools

Question 18

what are the types of plate bounders

Answer 18

divergent boundary
convergent boundary
transform boundary
theere is alos only one transport boundary

Question 19

how do convergent plates move

Answer 19

they collide together

Question 20

seduction only happens with type of plate boundary

Question 21

what types of crust do we have ?

Question 22

what cam be created when two oceanic plates come together

Answer 22

volcanic islands

Question 23

how do divergent plate boundaries move

Answer 23

they move away from one each other
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Question 24

what is an example of a divergent plate boundaries

Answer 24

the (M O R ) “ocean range is one example of a divergent plate boundary
only (oceanic crust )
east African rift (only cont entail crust)

Question 25

how do transform plate boundary's plates move ?

Answer 25

they slide past each other

Question 26

what type of crust is with transform plate boundary's

Question 27

what is a convection currant ?

Answer 27

1: magma heats up, becomes less dense,and rises 2: magma cools, becomes more dense, sinks/falls

Question 28

what is an earthquake

Answer 28

1: an earthquake is a sudden movement with a crack in the earths surface which is called a fault.

Question 29

which plate boundary's have shallow earthquakes.

Answer 29

1. divergent | 2. transform / these are our shallow

Question 30

which plate boundary's have the deepest earthquakes

Answer 30

1. convergent plate boundary's are the deepest earthquake

Question 31

what are the four types of stress are applied to rocks

Answer 31

1. compression when pushed together 2.tension when pulled apart 3. shear is when is twisting /and torsion stress

Question 32

what are the two types of deformation

Answer 32

1. elastic: when the stress is removed it turns to its original shape 2. plastic:when stress is removed it remains in the same shape

Question 33

how many types of size mic waves are there ?

Answer 33

there are 3 types 1: primary waves 2: secondary 3: surface waves

Question 34

what are the two types of body waves?

Answer 34

1: ( p-waves) are known as primary waves 2: secondary waves: can be called (s-waves)

Question 35

what type of wave is a primary wave?

Answer 35

1: compression is a primary wave( are also the fadstest

Question 36

what body wave is the fastest?

Answer 36

the fastest is primary wave

Question 37

what body wave is the fastest?

Answer 37

the fastest is primary wave

Question 38

what type of materials do primary waves travel through?

Question 39

what type of material secondary waves travel through?

Answer 39

1: they travel through solids

Question 40

what type of waves do the most damage

Answer 40

1: surface waves do the most damage because they move up and down and cause the most damage when they move

Question 41

what are the two scales to measure earthquakes

Answer 41

1 : the Richter magnitude | 2: Mercalli

Question 42

what does the Ricter scale measure

Answer 42

the amount of energy realest

Question 43

what does the mercalli scale measure

Answer 43

1 the amount of damage is measured by the mercalli scale