Chapter 25 Flashcards

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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
Q

what are the four types of stress applied on rock

A

compression
tension
shear
torsion

25
Q

what are the two types of deformation

A

elastic and plastic

26
Q

what happens when elstic deformation occurs

A

stretches and returns to its place

27
Q

what happens when plastic deformation occurs

A

the rock will stay in a new form

28
Q

how many size seismic waves are there

A

there is three
primarty
secondary
surface

29
Q

what are the two types of body waves

A

primary waves and secondary waves

30
Q

what type of wave is a primary wave

A

compression

31
Q

what kind of material move thorugh p waves

A

sold and liquids

32
Q

what kind of material do secondary waves move through

A

only solids

32
Q

what kind of material do secondary waves move through

A

only solids

33
Q

what is the most complex wave

A

surface

34
Q

what does the rector scalem measure

A

the mout of eneerguy realeased

35
Q

whatr does the mercalli scale measured

A

the amount of damaged