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earth science 11 > w3 > Flashcards

w3 Flashcards

1
Q

what makes the plates move?

A

convection current

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2
Q

elastic or plastic-like
part of the mantle

A

asthenosphere

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3
Q

A force that acts on rock to
change its shape or volume.

A

stress

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4
Q

types of stress

A

Tensional stress
Compressional stress
Shear stress

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5
Q

happens at divergent boundaries

A

tensional stress

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6
Q

happens at convergent boundaries

A

compressional stress

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7
Q

happens at transform boundaires

A

shear stress

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8
Q

➡⬅

A

compressional stress

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9
Q

⬅➡

A

tensional stress

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10
Q

⬇⬆

A

shear stress

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11
Q

rocks get thinner in the middle
as it is pulled apart.

A

tensional stress

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12
Q

boundaries between two
plates that are colliding.

A

compressional stress

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13
Q

rock is pushed in two opposite directions or sideways.

A

shear stress

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14
Q

formed when rocks experience
compressive stress and deform,
causing the rocks to bend.

A

folds

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15
Q

types of folds

A

monocline
anticline
syncline

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16
Q

“one step” bend

A

monocline

17
Q

convex upward, A

A

anticline

18
Q

concave upward, U

A

syncline

19
Q

break or crack in Earth’s lithosphere
along which the rocks move.

A

faults

20
Q

parts of a fault

A

footwall (block)
hanging wall (block)

21
Q

is the rock that is placed
on top of the fault.

A

footwall block

22
Q

is the rock that is below the fault.

A

hanging wall block

23
Q

moves in a fault

A

footwall block

24
Q

does not move in a fault

A

hanging wall block

25
Q

types of fault

A

Normal Fault
Reverse Fault
Strike-Slip Fault

26
Q

A rock is pulled apart by
tension in Earth’s crust.

Rock drops down as it
breaks.

A

normal fault

27
Q

Rock is forced upward as it
is squeezed by
compressional stress.

A continental plate colliding
with another continental
plate

A

reverse fault

28
Q

Rock is sheared (or cut)
from sheer stress.

Rocks on each side of
the fault slip past each
other as they break.

A

strike-slip fault

earth science 11 (5 decks)

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