Geology year 8 Flashcards

Preparation for geology test

1
Q

Faults

A

Cracks where rocks break and move past each other

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2
Q

Folds

A

Bends in rock layers due to stress

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3
Q

Boundary

A

Line separating different tectonic plates

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4
Q

Anticline

A

Fold where oldest rock layers are at the core, arched upward

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5
Q

Syncline

A

Fold where youngest rock layers are at the core, arched downward

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6
Q

Deformation

A

Process where rocks change shape under stress

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7
Q

Folding

A

Bending of rock layers under stress

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8
Q

Fault blocks

A

Blocks of rock on either side of a fault

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9
Q

Strike-slip fault

A

Fault where blocks move past each other horizontally

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10
Q

Normal fault

A

Fault where hanging wall moves down relative to footwall

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11
Q

Reverse fault

A

Fault where hanging wall moves up relative to footwall

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12
Q

Fault plane

A

Location where two fault blocks meet

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13
Q

Hanging wall

A

Block above the fault plane

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14
Q

Footwall

A

Block below the fault plane

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15
Q

Elastic Deformation

A

Reversible strain in material

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16
Q

Ductile Deformation

A

Irreversible strain in material

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17
Q

Fracture Deformation

A

Irreversible strain leading to material breakage

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18
Q

Orogeny

A

Formation of mountain ranges by crustal displacement

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19
Q

Fault

A

Break or crack where tectonic plates move

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20
Q

Fold

A

Bending of rock layers due to plate movement

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21
Q

Brittle

A

Rock’s tendency to break under stress

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22
Q

Plastic

A

Rock’s ability to deform without breaking

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23
Q

Compression

A

Stress causing rocks to be squeezed together

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24
Q

Tension

A

Stress causing rocks to be pulled apart

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25
Shearing
Stress causing rocks to slide past each other
26
Confining / Uniform
Stress applied equally in all directions
27
Transform Fault Boundary
Boundary where tectonic plates slide past each other
28
San Andreas Fault
Major fault in California known for seismic activity
29
Size Scale
Providing a reference for the size of geological features
30
Igneous Rock
Formed by cooling and solidifying magma or lava
31
Erosion
Natural removal of soil and rock by wind or water
32
Deposition
Process of laying down material to form landforms
33
Sediment
Material broken down by weathering and erosion
34
Sedimentary Rock
Rock formed from compressed sediment layers
35
Heat & Pressure
Forces that transform rocks into metamorphic rocks
36
Metamorphic Rock
Rock altered by heat and pressure conditions
37
Magma & Lava
Molten rock beneath the Earth's surface
38
Melting
Process of turning solid rock into molten form
39
Volcanic Activity
Processes related to volcanic eruptions
40
Sedimentary rock
Rock with layers showing deposition of sediment at different time periods, often porous and containing fossils
41
Sediment
Small grains weakly held together, forming porous and sometimes soft and crumbly rocks
42
Cementation
Process where pressure compacts sediment grains together to form a solid rock
43
Rock cycle
Continuous process of rock formation and transformation through geological processes
44
Weathering
Process of breaking down rocks into smaller fragments by natural elements like water, wind, and temperature changes
45
Fossils
Remains or traces of ancient organisms preserved in sedimentary rocks
46
Chemical sedimentary rocks
Formed when dissolved materials in water solidify and settle at the bottom through processes like evaporation and crystallization
47
Organic sedimentary rocks
Result from the burial and transformation of dead plant and animal debris under pressure and heat, often containing fossils
48
Clastic sedimentary rocks
Composed of pieces of pre-existing rocks compacted and cemented together, with clasts larger than 2 millimeters
49
Evaporation
Process of liquid turning into vapor and leaving behind solid materials
50
Crystallization
Formation of solid crystals from a solution
51
Halite
A type of chemical sedimentary rock composed of salt crystals
52
Limestone
A type of chemical sedimentary rock often containing fossils and formed from calcium carbonate
53
Coal
An organic sedimentary rock formed from buried plant debris under pressure and heat
54
Chalk
An organic sedimentary rock made of calcium carbonate from marine organisms
55
Clastic Process
Process where weathered rock fragments are transported, trapped, compacted, and cemented to form sedimentary rocks
56
Plenary
Session at the end of the class to review if learning objectives were met
57
Weathering
Process of breaking down rocks into smaller fragments by natural elements like water, wind, and temperature changes
58
Compaction
Process where layers of sediment are compressed by the weight of overlying materials
59
Deposition
Process where sediments settle out of a transporting medium and accumulate on the surface
60
Basin
A natural depression in the Earth's surface where sediments accumulate
61
Pressure
Force applied to an area, compacting sediment grains together to form rocks
62
Plate Movement
Plates shift 1 to 10 cm annually.
63
Plate Boundaries
Areas where plates interact, causing various geologic events.
64
Divergent Boundaries
Plates move apart, forming shield volcanoes and rift valleys.
65
Convergent Boundaries
Plates collide, leading to subduction, volcanic eruptions, and earthquakes.
66
Rift Valley
Valley formed when plates separate, like Hell's Gate in Kenya.
67
Subduction
Denser oceanic crust sinking beneath continental crust.
68
Shield Volcanoes
Volcanoes formed by the eruption of molten rock at divergent boundaries.
69
Mt St. Helens
Volcano resulting from the Juan de Fuca-North American plate collision.
70
Italian Volcanic Activity
Volcanic events from the Eurasian-African plate convergence.
71
Earthquake Formation
Plates jam, build pressure, then release energy as seismic waves.
72
Conservative Boundaries
Plates slide past each other, causing destructive earthquakes.
73
San Andreas Fault
A famous conservative boundary known for seismic activity.
74
Collision Boundaries
Plates move slowly, uplifting crust to form mountain ranges.
75
Himalayan Mountains
Result of the collision between the Indian and Eurasian plates.
76
Convection Currents
Heat-driven currents causing tectonic plate movement.
77
Plate Boundary Name
Term for the location where tectonic plates meet.
78
Island Formation
Process occurring at divergent boundaries, like in Iceland.
79
Seismic Waves
Energy released during an earthquake event.
80
Plate Snap
Abrupt movement of plates past each other, causing earthquakes.
81
Pressure Build-Up
Accumulation of force between stuck tectonic plates.
82
Plate Tectonics
Theory explaining movement of Earth's lithosphere plates
83
Convection
Heat-driven circulation in a fluid or gas
84
Continental Drift
Movement of continents over geologic time
85
Pangaea
Supercontinent that existed about 250 million years ago
86
Convergent Boundaries
Plate boundaries moving towards each other
87
Plates
Sections of Earth's lithosphere that move
88
Current
Flow of fluid or gas in a specific direction
89
Faults
Fractures in Earth's crust where movement occurs
90
Continents
Large landmasses on Earth's surface
91
Starter
Initial question or activity to engage students
92
Shell
Outer layer of Earth's surface like an egg's shell
93
Mantle
Layer between Earth's crust and core
94
Yellow Yolk
Analogous to Earth's core in the egg analogy
95
Egg White
Analogous to Earth's mantle in the egg analogy
96
Scientific Evidence
Data supporting the theory of plate tectonics
97
Alfred Wegener
German scientist who proposed continental drift
98
Permian Period
Geologic time period 250 million years ago
99
Triassic Period
Geologic time period 200 million years ago
100
Jurassic Period
Geologic time period 145 million years ago
101
Cretaceous Period
Geologic time period 65 million years ago
102
Laurasia
Northern part of Pangaea after split
103
Sediments
Particles composing sedimentary rocks before formation
104
Metamorphic Rocks
Formed by high heat and pressure causing chemical and physical changes
105
Regional Metamorphism
Occurs from tectonic plate movements, heating, and compression
106
Contact Metamorphism
Results from rocks encountering hot magma, inducing changes
107
Gneiss
Metamorphic rock with bands or flat layers, denser and harder
108
Diamond
Precious mineral found in some metamorphic rocks
109
Ruby
Another precious mineral sometimes present in metamorphic rocks
110
Sapphire
A precious gemstone that can be found in metamorphic rocks
111
Metamorphism
Process of rock change due to high heat and pressure
112
Igneous Rock
Rock formed from the cooling and solidification of magma or lava
113
Sedimentary Rock
Rock formed from the accumulation of sediments over time
114
Heat
Energy transferred between substances due to temperature difference
115
Pressure
Force applied perpendicular to a surface
116
Chemical Changes
Alterations in the composition of substances
117
Physical Changes
Modifications in the appearance or state of matter
118
Layers
Strata or sheets of material stacked on top of each other
119
Crystals
Solid structures with a definite geometric shape
120
Denser
Having a higher mass per unit volume
121
Harder
Resistance of a material to deformation or scratching
122
Wavy Patterns
Curved or undulating designs seen in some rocks
123
Zig-Zag Patterns
Angular or jagged designs observed in certain rocks
124
Igneous
Rock formed from solidified magma
125
Magma
Molten rock beneath the Earth's surface
126
Lava
Magma that reaches the Earth's surface
127
Mantle
Layer between the crust and core
128
Core
Earth's innermost layer
129
Crust
Earth's outermost layer
130
Crystal
Mineral with a geometric shape
131
Interlocking
Crystals growing into each other and locking together
132
Extrusive
Igneous rock formed above the surface
133
Intrusive
Igneous rock formed below the surface
134
Inner Core
Solid, very hot layer composed of iron and nickel
135
Outer Core
Liquid layer composed of iron and nickel
136
Starter
Not provided in the notes
137
Solid
State of matter with fixed shape and volume
138
Liquid
State of matter with fixed volume but no fixed shape
139
Compare and contrast the inner core, outer core, mantle and crust
Analyze the differences and similarities between Earth's layers
140
Differentiate between magma and lava
Distinguish molten rock below and above the Earth's surface
141
Rocks
Composed of minerals and formed in various ways
142
Minerals
Chemical substances with consistent composition
143
Formation of Igneous rocks
Process of magma cooling and solidifying to form rocks
144
Felsic VS Mafic
Comparison based on silica/quartz content (felsic) or iron/magnesium content (mafic)
145
Faults
Cracks where rocks break and move past each other
146
Folds
Bends in rock layers due to stress
147
Boundary
Line separating different tectonic plates
148
Anticline
Fold where oldest rock layers are at the core, arched upward
149
Syncline
Fold where youngest rock layers are at the core, arched downward
150
Deformation
Process where rocks change shape under stress
151
Folding
Bending of rock layers under stress
152
Fault blocks
Blocks of rock on either side of a fault
153
Strike-slip fault
Fault where blocks move past each other horizontally
154
Normal fault
Fault where hanging wall moves down relative to footwall
155
Reverse fault
Fault where hanging wall moves up relative to footwall
156
Fault plane
Location where two fault blocks meet
157
Hanging wall
Block above the fault plane
158
Footwall
Block below the fault plane
159
Elastic Deformation
Reversible strain in material
160
Ductile Deformation
Irreversible strain in material
161
Fracture Deformation
Irreversible strain leading to material breakage
162
Orogeny
Formation of mountain ranges by crustal displacement
163
Fault
Break or crack where tectonic plates move
164
Fold
Bending of rock layers due to plate movement
165
Brittle
Rock's tendency to break under stress
166
Plastic
Rock's ability to deform without breaking
167
Compression
Stress causing rocks to be squeezed together
168
Tension
Stress causing rocks to be pulled apart
169
Shearing
Stress causing rocks to slide past each other
170
Confining / Uniform
Stress applied equally in all directions
171
Transform Fault Boundary
Boundary where tectonic plates slide past each other
172
San Andreas Fault
Major fault in California known for seismic activity
173
Size Scale
Providing a reference for the size of geological features