exam1 Flashcards
(137 cards)
1
Q
accretion
A
adding new material , growth
2
Q
missing at the time of homogenous blob
A
core mantle crust ocean atmosphere cmcoa
3
Q
process of gd
A
Iron sinks
RISE **
4
Q
Possible contribution from comets
A
brought water from outerspace
5
Q
original atmosphere
A
carbon dioxide
6
Q
importance of moon
A
stabilizes planet’s tilt
7
Q
importance of plants
A
source of oxygen
8
Q
gases, rocks, dust, ice =
A
space junk
9
Q
light elements do what
A
rise
10
Q
interior source of gases =
A
volcanic outgassing
11
Q
moon stabilizes the earth’s _____
A
tilt
12
Q
earth is unique because…
A
stable climate
13
Q
adding new material growth is process of…
A
accretion
14
Q
origin = 4.0 by is
A
ocean
15
Q
gd creates a….. earth
A
layered earth
16
Q
time = 4.7 by
A
solar nebula cloud
17
Q
iron meteorite represents the
A
core
18
Q
example of heavy element that sinks
A
IRON
19
Q
example of light element that rises
A
silicon
20
Q
got_____ got life
A
GD
21
Q
important for life?
A
liquid water
22
Q
origin = 4.6 by
A
Earth
23
Q
Heavy elements
A
sink
24
Q
mixed together - Earth
A
Homogenous blob
25
source of oxygen
plants
26
pulls space junk together...
gravity
27
no core mantle crust ocean atmosphere
molten blob
28
origin = 13 by
universe
29
origin of moon =
impact
30
original atmosphere =
co2
31
global differentiation =
separation
32
missing from original atmosphere
oxygen
33
radioactive element
uranium
34
water from outer space
comets
35
3 types of plate boundaries
convergent divergent transform
36
characteristics of divergent plate boundary
moving apart
make new ocean crust = basalt
ocean gets larger
mid ocean ridge = EPR, MAR
Iceleand - volcanoes = quiet eruptions = basalt
moderate sized earthquake
split apart continents = rift like Golf of california
37
characteristics of convergent plate boundary
```
subduction ( come together )
destroy old ocean crust
ocean gets smaller
volcanic arc = parallel to trench
trench = deepest parts of ocean
explosive volcanoes = andesite
devastating earth quakes 9.5 , 1960 chile
Ring of Fire
Earthquake and volcanoes along the trenches along the rim at the pacific ocean
```
38
characterisitics of transform plate boundary
crust neither created or destroyed
rocks move past each other
no volcanoes
earth quakes = 8,2,2 minutes SAF Fault
39
What plate do i live on
pacific plate
40
direction of pacific plate
NW
41
direction of NAmerican Plate
SE
42
MAR and EPR are what kind of plate boundaries
DIVERGENT
43
characteristics of continental drift
a - continents are constantly in motion
b - present day positions are different than the past
c - only an observation & hypothesis, no mechanism
44
characteristics of sea floor spreading
a - opening & growth of an ocean basin by rifting @ a mid ocean ridge
b - formation of basalt
c - mechanism to move continents
45
RIFT VS DRIFT
RIFT IS active, sea floor spread
DRIFT is passive continental drift
46
4 evidences for plate boundaries?
volcanoes
earthquakes
trenches
underwater mtns
47
t or f , divergent = new ocean
t
48
Will the gulf of california get bigger or smaller?
BIG
49
Will the gulf of california get bigger or smaller?
BIG
50
which is the mechanism that formed the earth
accretion
51
what are 3 incorrect models for origin of moon
capture model
fission model
co-accretion model
52
correct model for origin of moon
IMPACT
53
crust not created or destroyed, rocks move past each other
transform
54
rifts that form when continents split apart
divergent
55
form new ocean crust basalt and ocean gets larger
divergent
56
destroy ocean crust, trenches
convergent
57
andesite... plate boundary =
convergent
58
san andreas fault, plate boundary =
transform
59
hawaii has plate boundary
no plate boundary in hawaii
60
plate boundary iceland has
divergent
61
plate boundary that red sea has...
divergent
62
single continent =
pangaea
63
island on divergent in @lantic
iceland
64
name of plate for los vegas
North American plate
65
direction of motion of pacific plate
North West
66
volcanoes, eqs, around the pacific ocean
ring of fire
67
divergent pacific ocean
East pacific rise
68
next hawaiian island
loihi
69
plates move side by side
transform
70
so cal transform plate boundary
san andreas fault
71
warm materials ____ at divergent
rise
72
hawaii
hot spot
73
name of plate i live on
pacific plate
74
heat transfer on mantle **** idk
Convection
75
opened 200 my ago
@lantic
76
plates move apart
divergent
77
divergent atlantic ocean...
MAR
78
ocean-ocean collision
phillipines
79
single ocean
panthalassic
80
continental-continental collision mountains
himalayas
81
plates move together
convergent
82
rock formed at divergent
basalt
83
active volcano on big island
kiluea
84
rock composes continents
granite
85
split apart a continent
rift
86
cold materials ___ at convergent
sink!
87
type of volcanoes associated with rof
explosive
88
type of rock that COMPOSES volcanoes @ ROF
andesite
89
color of basalt
BLACK
90
color of andesite
grey
91
Type of convergent plate boundary at atleutians and its direction?
NW
| Ocean-Ocean
92
Type of convergent plate boundary at japan and direction
NW
| Ocean- Continent
93
Type of plate boundary @ marianas & direction
W
| O-O
94
Type of plate boundary @ philippines & direction
W
| O-O
95
Type of convergent plate boundary at west coast of south america and direction
Ocean-Continent
| East
96
Type of convergent plate boundary at west coast of central america and direction
NE
| O-C
97
Type of convergent plate boundary @ cascadia and direction?
E
| Ocean-Continent
98
Y DO U NOT EXPECT VOLCANOES ON EAST COAST OF AUSTRALIA
no plate boundary
99
what directions is the east pacific rise moving?
east and west
100
type of volcanoes @ EPR
quiet & basalt
101
what is going to happen to the oceanic crust created at the east pacific rise as the crust encounters the west coast of south america?
SUBDUCTED AND DESTROYED WHEN IT HITS S AMERICA
102
What type of volcanoes do you expect to occur along the west coast of south america?
dvestating earthquakes 9.5
103
what type of volcanoes do you expect to occur along the west coast of south america?
explosive andesite
104
diffrent type of volcanoes happen at different points what type of volcanoes @ EPR and what type of volcanoes @ convergent plate boundaries
quiet basalt = divergent so epr
explosive andesite = convergent
105
what is the future of the golf of california?
larger`
106
if you were to visit the gulf of california in 10 mil years what would you see?
ocean
107
name the type of rock that composes volcanoes in hawaii
basalt
108
are midway islands above the hot spot?
no
109
midway islands older or younger than mauna kea? how can you tell
older
| further away from the hotspot
110
what does the line of the hawaiian islands tell you about the present day motion of the pacific plate? which way is it moving
NW
111
age of tenchi seamount compaered to the midway islands?
older
112
what will happen to tenchi seamount as it travels on the pacific plate
will be subducted/destroyed
113
how old is the bend in the hawaii ridge
43 million years old
114
what does the bend indicate for the motion of the pacific plate
plate changed direction
115
how do the island seamounts compare?
all the same tbh
116
what kind of plate boundary is the mid atlantic ridge?
divergent
117
what type of volcanoes are associated witth the mid atlantic ridge
quiet basalt
118
what is the spread of the mid atlantic ridge
east and west
119
is the atlantic ocean surrounded by trenches
no
120
is atlantic ocean getting bigger or smaller
bigger
121
do you expect to find a rof in the atlantic ocean
NO, no trenches
122
do you expect to find volcanoes in iceland
YES, divergent
123
islands are typically what kind of convergent plate boundary?
ocean-ocean
124
what compass direction is subduction occurring
west
125
what type of volcanoes happen @ subdcution
explosive + andesite
126
what type of earthquakes happen
large and destructive
127
would you expect to find volcanoes & destructive earthquakes at the following locations?
east coast of US, west coast of africa, england, east coast of south america
NO BECAUSE NO PLATE BOUNDARIES OR TRENCHES FOR ALL OF THEM
128
name of divergent plate boundary in the pacific ?
EPR, East pacific rise
129
is epr surrounded by trenches?
yes
130
pacific getting larger or smaller?
smaller
131
divergent plate boundary in the atlantic ocean
Mar
132
Atlantic ocean surrounded by trenches?
no
133
atlantic getting bigger or smaller?
bigger
134
name a hotspot
hawaii, galapagos, yellowstone
135
3 types of plate boundaries
divergent
convergent
transform
136
2 components/ parts of plate tectonics
continental drift and sea floor spreading ****
137
4 numbers
13. 7 by - universe
4. 6 by - earth
4. 0 by - ocean
200 my oldest crust in @lantic & pacific
