Paleogeogprahy and Plate Tectonics Flashcards

1
Q

what is the name of the super continent

A

Pangea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what did Wegener theorized

A

he noticed that the eastern coastline of South america and western coastline Africa looked like they were connected
-> he suggested these two continents, and others, were connected and then drifted apart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what was a flaw of Wegener’s theorization in the beginning

A

there was no convincing evidence for how land masses as big as they are were could move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

true or false - below the earth’s surface, it is a uniform mass of rock

A

false - it is not uniform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the outermost layer of the earth
a) mantle
b) crust
c) surface

A

b

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

true or false - the mantle is the thinnest

A

false - the crust is

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

name the layer beneath the crust

A

mantle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

true or false - the uppermost portion of the mantle is solid

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what are the two layers of the mantle and describe each one

A
  1. lithosphere -> solid, composed of many discrete pieces
  2. asthenosphere -> viscous and slowly flowing , may be deformed due to the weight about
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

where is the core and what is it composed of

A

it is found below the mantle -> iron and nickel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

define the main difference between the inner and outer core

A

outer core is molten liquid
inner core is a solid ball - temperature is about the same as the surface of the sun

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

explain the convection currents

A

these currents are created by the extreme heat in the inner layers
-> they affect the plates and cause them to move slowly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what happens if the cool crust is more dense than the below layers

A

causes the lithosphere plates to slowly sink and melt into the lower layers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

the term used to describe the movement of the lithosphere is

A

plate tectonics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what has provided an explanation for drifting continents

A

plate tectonics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

by the end of what period and start of what period formed Pangea

A

end of Permian and start of Triassic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is Panthalassa

A

single super ocean

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

true or false during the late triassic and early jurassic, dinosaurs were alike… why or why not

A

true because Pangea was unbroken -> no barriers

19
Q

what dinosaur group was found worldwide during Pangea

A

prosauropods

20
Q

when did the first sauropods evolve

A

late in the triassic

21
Q

select the correct features of a diplodocids (more than 1)
a) long necked
b) short necked
c) elongated skull
d) longer front legs
e) simple teeth
f) sharp teeth
g) teeth all over mouth

22
Q

where are the teeth in diplodocids

A

only in the front of mouth

23
Q

what are three examples of macronarians

A

brachiosaurus and giraffatitan and camarasaurus

24
Q

true or false - macronarians did not have long necks

A

false - they did

25
what two dinosaurs were found side by side in the fossil quarry
camarasaurus and diplodocus
26
define the differences between camarasaurus and diplodocus
camamrasaurus - teeth in all of mouth, powerful mouth, spoon/robust teeth, not picky eaters -> macronarians diplodocus - teeth only in front, picky eater, adapted to reach high, peg teeth -> sauropods
27
when two similar animals avoid direct competition for resources, this is called
niche partitioning
28
what was the well known thyreophorans and from what period were they from
jurassic period -> stegosaurus
29
the jurassic gazelle is referring to what group of dinosaurs
ornithopods - long legs for speed
30
camptosaurus is a) iguanodont b) tyrannosoid c) therapod
a
31
in the late jurassic, a new group of big carnivorous dinosaurs evolved called ....
allosauroids
32
what made allosauroids significant for predators
spines were stiffer, long legs which meant fast running
33
what is the most successful predator in the late jurassic
allosauroids
34
the chicken sized therapod is a) allosaurus b) camptosaurus c) compsognathus
c
35
true or false - compsagnethus is part of the allosauroids
false - it is part of the coelurosaur (therapods)
36
select the features of a coelurosaur a) big hands b) narrow hands c) long sacral vertebrae d) heavy tails e) light tails
b,c,e
37
true or false - laurasia was composed of NA, europe and africa
false - NA, europe and Asia (NEA)
38
what are the continents in southern Gondwana
SA, australia, africa, antarctica, Madagascar and India (SAAAMI)
39
what were the dominant species in africa
therapods -> spinosaurs and carcharodontosaurids
40
what were the dominant species in NA and europe
igunaodontians, anylosaurs and sauropods
41
in what continent did the first ceratopsians evolve
asia
42
what two continents were still connected until the end of Creataceous
antarctica and australia
43
sauropod dinosaurs thrived where
in Gondwana