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physical science > chapter 25 > Flashcards

chapter 25 Flashcards

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Biology 101 flashcards
1
Q

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

A

mid-ocean ridge

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2
Q

forms in between peaks along the mid-ocean ridges

A

rift valley

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3
Q

boundary where two plates collide

A

convergent plate boundary

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4
Q

When a thick and bouynat continetal plate meets thin and dense oceanic plate,denser plate dives beneath the contiment in a process

A

subduction

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5
Q

boundary between two plates that are moving apart

A

divergent plate boundary

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6
Q

plate sides horizontally past each other in opposite directions

A

transform plate boundary

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7
Q

sudden movement or vibration of the ground

A

earthquake

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8
Q

crack in Earth’s crust along which rocks moved

A

fault

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9
Q

sudden release of strain energy as rocks moves along a fault

A

elastic rebound

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10
Q

point of origin for an earthquake

A

focus

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11
Q

point on Earth’s surface directly above focus

A

epicenter

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12
Q

Who came up with continental drift hypothesis?

A

Alfred Wegener

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13
Q

What were some pieces of evidence that support the hypothesis?

A

Large land animal fossils
coast lines matched up
mountain ranges matched up had the same rock compision and rock age

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14
Q

What was the name of the super continent?

A

pangea

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15
Q

who came up with the seafloor spreading hypothesis?

A

Harry Hess

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16
Q

What did Hess uses to help him create a map of the seafloor?

A

Sonor

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17
Q

How discovered the mid-ocean range?

A

Harry Hess

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18
Q

Where will you find younger rock?

A

It was closer to the M.O.R or near the M.O.R

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19
Q

What are the three types of plate boundaries?

A

divergent boundary
Convergent boundary
Transform boundary

20
Q

Subduction only happens with whch type of plate number

A

convergent

21
Q

move toward one point or approach each other

A

convergent

22
Q

What are the two type of crust are involved in plate

A

oceanic crust

conitinental crust

23
Q

What lands from when oceanic crust and contintemtal convert

A
24
Q

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

A

hot spots=they create islands

25
Q

What land form is created when two contentinental collide?

A

mountains

26
Q

What type of crust must be presented from volcanoes activty to occur?

A

oceanic crust

27
Q

How do divergent boundaries move?

A

they move away from each other

28
Q

What are two examples of divergent plate boundaries?

A

M.O.R (made up with oceanic crust)

East African Rift (made up with two contentinental crust)

29
Q

How do convection crust

A

magma hits up, becomes less dense then rises

30
Q

What continental crust or involved with transform plate boudry

A
31
Q

What other forces that help with plate motion

A

slab pull,ridge push,and friction

32
Q

What two types of boundaries have shallow earthquakes?

A

Divergent and transform

33
Q

Which type of boundary has deep earthquakes?

A

Convergent

34
Q

What are the types of stress can be put on rocks?

A

compression stress
tension stress
shear stress
torsion stress

35
Q

What are the two types of deformation?

A

Elastic Deformation

Plastic Deformation

36
Q

What happens to a rock during plastic deformation?

A

it stays deformed

37
Q

What are the kind of seismic waves?

A

primary
secondary
surface

38
Q

What type of seismic waves moves the fastest?

A

primary

39
Q

How do primary waves move?

A
40
Q

What type of materials do waves move in?

A

solids and liquids

41
Q

How do secoundary waves move?

A
42
Q

What type of material do secondary waves move?

A

trans verse waves

43
Q

what type of waves most complex and causes the most damage?

A

surface waves

44
Q

What are the two scales that are measured earthquakes?

A

Richter scale

mercali scale

45
Q

What does the Richter scale tell us about an earthquake?

A

amount of energy released

46
Q

What amount of damaged was done

A

amount of damaged done

physical science (16 decks)

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