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Physical Science > CH 25 > Flashcards

CH 25 Flashcards

1
Q

Hess discovered system of moution ranges

A

mid-ocean Ridge

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2
Q

The boundary where two plates collide

A

Convergent plate boundary

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3
Q

Subduction
When a thick and buoyant continental plate meets a thin and dense oceanic plate, the denser plate dives beneath the continent in a process

A

Subduction

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4
Q

Transform plate boundary

The type of boundary where plates slide horizontally past each other in opposite directions

A

Transform plate boundary

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5
Q

The sudden movement or vibration of the ground that occurs when rocks slip and slide along enormous cracks in the earth called faults

A

Earthquake

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6
Q

the crack in Earth’s crust along which rock has moved

A

Fault

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7
Q

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

A

Elastic rebound

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8
Q

The point of origin for an earthquake

A

Focus

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9
Q

The point on Earth’s surface directly above the focus

A

Epicenter

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10
Q

A long narrow depression that forms in between peaks along the mid ocean ridge

A

Rift valley

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11
Q

The boundary between two plates that are moving apart

A

Divergent plate boundary

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12
Q

Who came up with the Continental drift hypothesis?

A

Alfred Wegener

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13
Q

What is some evidence for Wagner’s’ hypothesis?

A
  1. Coast lines match up like puzzle pieces
    2.They found fossils
    3.
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14
Q

What was the name of the super content?

A

Pangaea

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15
Q

Who came with the sea floor spreading hypothesis?

A

Harry Hess

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16
Q

How did Harry Hess map the bottom of the sea floor?

A

sonar

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17
Q

Who discovered the mid ocean floor?

A

Harry Hess

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18
Q

where at the bottom of the is the youngest going to be found?

A

closer to the mid-ocean ridge (MOR)

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19
Q

What are the types of plate boundaries?

A

Divergent
Convergent
Transform

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20
Q

How do convergent plate boundaries move

A

they collide

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21
Q

Subduction zones only occur with which of plate boundary?

A

convergent plate boundaries

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22
Q

What two types of crust are found in plate movement?

A

Oceanic crust and continental crust

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23
Q

what are the types of land forms that can be created when oceanic and continental crust converge?

A

Volcano’s and deep-sea trenches

24
Q

What land forms are created when two oceanic crust converge?

A

deep-sea trench, hot spots (creates islands)

25
Q

What land form is created when two Continental crust converge?

A

Mountains

26
Q

How do divergent plate boundaries move?

A

Dividing

27
Q

what are two examples specific examples of divergent plate boundaries?

A

MOR(two oceanic crust ), east African rift(continental crust)

28
Q

How do transform plate boundaries move?

A

The slide by each other

29
Q

What is a specific example of a transform plate boundary

A

The San Adras fault (made up of two continental crust)

30
Q

How does a convention current work?

A
  1. Magma heats, becomes less dense, Rises

2. Magma cools, becomes more dense, falls

31
Q

What types of plate boundaries have shallow earthquakes ?

A

Divergent and transform

32
Q

Which boundary have earth quakes.

A

Convergent plate boundaries

33
Q

What are the four types of stress that can be applied to rocks?

A

Compression, tension, shear, torsion(twisting)

34
Q

what are the types of deformation?

A

elastic and plastic

35
Q

What happens to the rock if elastic deformation occurs?

A

soon as tension is released returns to the original shape

36
Q

What happens to the rock if plastic deformation occurs?

A

soon as stress is released it it remains in new shape.

37
Q

What types of seismic waves are there?

A

primary, secondary, surface

38
Q

Which type of wave moves the fastest?

A

Primary wave

39
Q

How do primary wave move

A

through compression

40
Q

How do secondary waves move?

A

transverse

41
Q

What types of materiel’s can p waves move through?

A

liquids and solids

42
Q

what type of materials can s waves move through

A

solids

43
Q

Which waves ore the most complex and dangerous

A

Surface waves

44
Q

What are the two scales that hel measure earth quakes

A

ricard macali

45
Q

What dose the ricter scale measure

A

amount of energy released

46
Q

What dose macili realese

A

damage

47
Q
A

Infiltration

48
Q
A

Water table

49
Q
A

aquifer

50
Q
A

porosity

51
Q
A

Absolute Dating

52
Q
A

relative dating

53
Q
A

Unformitarianism

54
Q
A

Principal of superposition

55
Q
A

uncomformity

56
Q

Fossil

A

Physical Science (7 decks)

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