Chapter 25 Flashcards

1
Q

who came up with the continetal drift hypothesis

A

Alfred Wegener

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2
Q

what is some evidence for the contential drift

A
  1. All the coast lines matched up like puzzle pieces
  2. moutnains rock were the same with fossils
  3. same fossils that matched up
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3
Q

what was the name the super-continent called

A

Pangea

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4
Q

who came up with the sea floor spreading hypothesis

A

Harrry Hess

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5
Q

how did he discover sea floor spreading

A

he used sonar

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6
Q

whart did Hess discover using sonar

A

he discpovered the mid ocean ridge MOR

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7
Q

where are new rocks are formed in the ocean floor

A

closer to the MOR

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8
Q

where are the types of plate boundary

A

divregent
convergent
transform

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9
Q

how do conergent plates moves

A

connect together

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10
Q

what time of boundary will sudcution happen

A

convergent paltes

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11
Q

what types of crusts are there

A

continetal and ocean

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12
Q

if conntineal and ocean converge what happens

A

deeps sea trench and volcanos

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13
Q

whar forms if two ocean plates converge

A

volcvanic islands

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14
Q

whar forms if two ocean plates converge

A

volcvanic islands

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15
Q

whar do hot spot create

A

volcanic isalnd

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16
Q

how do divergent plates move

A

They go oppisite from eachother

17
Q

what is example of a divergent plate boundary

A

east african rift

18
Q

how do transform plate boundaries move

A

slide horizontal by eachother

19
Q

where is the only transform boundary at

A

san andreas fall

20
Q

what type if crsut has to be present for a transform plate boundary

A

only continental

21
Q

fault

A

a crack in earths surface

22
Q

what plate boundaries have have shallow earthquakes

A

divergent and transform

23
Q

what plate boundaries have deeper eather quakes

A

convergent

24
Q

what are the four types of stress applied on rock

A

compression
tension
shear
torsion

24
what are the four types of stress applied on rock
compression tension shear torsion
25
what are the two types of deformation
elastic and plastic
26
what happens when elstic deformation occurs
stretches and returns to its place
27
what happens when plastic deformation occurs
the rock will stay in a new form
28
how many size seismic waves are there
there is three primarty secondary surface
29
what are the two types of body waves
primary waves and secondary waves
30
what type of wave is a primary wave
compression
31
what kind of material move thorugh p waves
sold and liquids
32
what kind of material do secondary waves move through
only solids
32
what kind of material do secondary waves move through
only solids
33
what is the most complex wave
surface
34
what does the rector scalem measure
the mout of eneerguy realeased
35
whatr does the mercalli scale measured
the amount of damaged