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Earth Science 2nd Semester Exam 24/25 #4 Flashcards | StudBud
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Earth Science 2nd Semester Exam 24/25 #4
Earth Science 2nd Semester Exam 24/25 #4
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1
To what does the Cambrian “explosion” refer?
the giant meteor that struck Earth during the Cambrian
the increase of life-forms and diversity during the Cambrian
the abrupt heating of Earth during the Cambrian
the abrupt increase in volcanic activity during the Cambrian
2
As North America rifted from Europe and Africa, a continuous rift system called the _____ was formed
Mid-Atlantic Ridge
East African Rift Valley
Gulf of Mexico
Cordillera
3
The Cenozoic is known as
the age of fish
the age of dinosaurs
the age of birds
the age of mammals
4
When there is no tectonic activity along the edge of a continent, the edge is referred to as a
transgression
coastline
regression
Passive margin
5
An advantage that reptiles had during the Mesozoic compared to the amphibians was
they gave birth to live young instead of to eggs
they were warm blooded
They were able to use all the water on land to lay their eggs in
amniotic eggs which contain food and water allowing them to roam widely
6
_____ have been found in the waters of hydrothermal vents, suggesting that proteins and nucleic acids could have formed.
amino acids
dissolved minerals
DNA molecules
RNA molecules
7
During the ____, all but one of the major marine phyla appeared.
Cambrian explosion
Ouachita Orogeny
Antler Orogeny
Caledonian Orogeny
8
Which rock is the oldest?
C
B
A
D
9
A rapid appearance of many new species of organism’s usually
leads to an increase in glaciation
is directly related to a drop in sea level
happens after a mass extinction
happens just before an extinction event
10
Which line best represents the level of oxygen gas in the atmosphere during the Proterozoic?
C
B
A
D
11
What discovery would weaken the primordial soup hypothesis of the origin of life?
Earth's early oceans were warm.
lightning was common on early Earth.
Carbon dioxide, water and trace gases in early atmosphere.
Asteroid impacts were uncommon when life is began.
12
Which point on the timeline best indicates the time when birds first appeared?
C
D
B
A
13
The Mesozoic is known as
the age of birds
the age of dinosaurs
the age of fish
the age of mammals
14
Which rock is the youngest
C
B
A
15
What was the name of the supercontinent that existed during the Paleozoic?
Pangaea
Gondwana
Laurussia
Rodinia
16
An organism composed of a single cell that does not contain a nucleus and is the simplest kind of cell is a(n) ____.
bryozoan
animal
prokaryote
eukaryote
17
Today many types of organisms live in a marine environment. When did most of their phyla appear
Proterozoic
Permian
Cretaceous
Cambrian
18
Cyanobacteria use the process of ___ to produce energy, and oxygen is given off as a waste product.
differentiation
photosynthesis
oxidation
glaciation
19
What epoch saw the emergence of humans?
Miocene
Holocene
Jurassic
Pleistocene
20
What epoch marks the dawn of the ice ages?
Miocene
Pliocene
Pleistocene
Oligocene
21
Why do scientists think Ediacaran biota are not relatives of present day animals?
their structures for movement are different
they lack a mouth, anus, and gut
their shapes are dissimilar to all living organisms
they lack nuclei
22
Which summarizes the relationship between density of an element and its distribution in Earth?
The greater density, the smaller the amount of it found in the crust
The greater density, the greater the amount of it found in the crust
The lower the density, the smaller the amount of it found in the crust
The denser an element is, the smaller the amount of it in Earth’s core.
23
Identify the unconformity between layer B and C
disconformity
angular unconformity
nonconformity
24
Using cross cutting principles, identify which is younger, the fault or the intrusion?
fault
intrusion
25
What event marks the beginning of the Cenozoic era?
Volcano
Flood
Meteor
Earthquake
26
The extinction event shown on the time line was
most likely caused by widespread disease
devastating to all land animals
the most severe extinction event in Earth’s history
Mild compared to other extinction events
27
Select the correct response to describe amphibians
they do not need to be near water to reproduce
they are warm blooded
they require water in which to lay their eggs
they have an amniotic egg
28
Seed plants that lived during the Carboniferous impact life on Earth today because
They are the ancestors of all plant life on Earth
Their presence caused oxygen levels to drop, allowing mammals to evolve
Their remains formed coal, which is an important resource
They produced fossils that are used to date many geologic events
29
A scientist can assume that this life form did not exist during the Hadean Eon because________.
it contains RNA and DNA
it contains a nucleus
it has a cell membrane
it is unicellular
30
In order to categorize a margin as active or passive, you must have information about
the permeability of the margin rocks
the depth of water that covers the margin
the amount of tectonic activity along the margin
the rate of glacial movement along the margin
31
Which point on this time line should be labeled “Formation of Earth?”
C
D
A
B
32
What development in animals created fossils that mark the Cambrian explosion?
hard, mineralized skeletons
gills
jaws
lobed fins
33
The oldest known mineral on earth is
quartz
mica
zircon
fluorite
34
The process by which volcanoes vent water vapor, carbon dioxide, nitrogen, and other substances is called
glaciation
differentiation
oxidation
outgassing
