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Geologic Time Flashcards | StudBud
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Geologic Time
Geologic Time
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Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Which of the following adaptations gave mammals the ability to live in changing environments?
The young are able to nurse with milk
Warm body temperature
All of the above
Body coat with fur or hair
2
Dinosaurs and humans lived at the same time.
False
True
3
What is cyanobacteria?
First appeared 3.5 billion years ago
All of the above
Contained chlorophyll and produced oxygen
Blue-green algae
4
What is a type of plant that
did
have flowers or fruit?
Dicot
Angiosperm
Monocot
gymnosperm
5
What is the correct order of the eons in Earth’s history from oldest to most recent?
Hadean, Archaean, Proterozoic, and Phanerozoic
Phanerozoic, Paleozoic, Hadean, and Archaean
Hadean, Archaean, Phanerozoic, and Cenozoic
Hadean, Proterozoic, Phanerozoic, and Archaean
6
Why did the exoskeleton of trilobites change over time?
Competition for survival
The changing environments
Geologic Isolation
All of the above
7
What is a stromatolite?
A specialized fossil
A Precambrian organism
a layered mat formed by cyanobacteria
A single eukaryote cells
8
The movement of glaciers created which features of Earth’s surface?
Mountains
Continents
Deserts
Great Lakes
9
Which of the following describes the effect of oxygen gas on the Earth?
Produced the ozone layer
All of the above
Changed the oceans’ color from green to blue.
Oxygen caused some anaerobic species to become extinct
10
Older fossils are buried...
Closer to the surface
Deeper and further away from the surface
11
What era did humans first appear?
Paleozoic Era
Cenozoic Era
Devonian Period
Mesozoic Era
12
Which of the following divisions of geologic time represents changes in lifeforms regionally?
Eon
Era
Epoch
Period
13
What are reasons that explain why dinosaurs might have been able to grow so large?
All of the above
Their blood was warm
High oxygen content in the atmosphere
Large vegetation provided a lot of food
14
What event is linked to an “ice event” on Earth?
Asteroid impact with Earth
Continents building and drifting
The slowing of volcanic activity
Disruption of warm ocean currents from equator to the poles
15
What was the benefit of the development of an ozone layer?
Permitted the movement of life from the oceans to land
There is no benefit to the ozone layer
It slowed volcanic activity
All of the above
16
What characteristics do all tetrapods have in common?
Have eyes on the top of the skull
Have a backbone
All of the above
Have four limbs
17
Why can trilobites be used to study the passage of geologic time?
They lived in oceans
Physical features changed during specific time divisions.
They lived during the Paleozoic Era
they burrowed into sediments on the seafloor
18
What gases were present in the atmosphere during the Archaean Eon?
c. CO2, NH3, H2O, and CH4
b. CO2, O2, NH3, and H2O
CO2 and O2 only
19
What is a trilobite?
Aquatic plants
hard-shelled marine arthropod
The element associated with the death of dinosaurs
Sedimentary rocks
20
What was a life form that evolved during the Paleozoic Era?
Single eukaryote cells
Dinosaurs
Reptiles
Humans
21
What element is associated with the death of the dinosaurs?
Iridium
Sulfur
Methane
Hydrogen
22
What was the first dominant form of life on Earth?
Fish
Anaerobic bacteria
Dinosaurs
Aquatic plants
23
The Earth is about how old?
65 million years old
3,500 million years old
4,600 million years old
5,000 million years old
24
What is a type of plant that
did not
have flowers or fruit?
Dicot
Angiosperm
Gymnosperm
Monocot
25
What was the most significant greenhouse gas that marked the end of Snowball Earth?
Hydrogen
Carbon Dioxide
Methane
Oxygen
