Earth Science: The Changing Surface of Earth, Book G

Chapter 6: Geologic Time

Geologic Time

1.
What are Ediacara life-forms?
A)direct ancestors of Cambrian life-forms
B)no one knows for sure
C)unique organisms that went extinct
D)alien life-forms
2.
What was Pangaea?
A)the original name for North America
B)a geologic era
C)a large, single landmass
D)a type of trilobite
3.
Why is the Precambrian fossil record so sparse?
A)Vertebrates developed then.
B)There were no living things.
C)All organisms lived on land.
D)Many of the organisms had soft bodies.
4.
What occurs at the end of a geologic era?
A)a flood
B)a mountain-building event
C)an extinction
D)a comet hitting Earth
5.
What is NOT a characteristic of mammals?
A)warm-blooded
B)cold-blooded
C)produce milk to feed young
D)hair or fur
6.
A German shepherd and a Chihuahua look different, but they can interbreed. They are __________.
A)proof for evolution
B)from different species
C)products of natural selection
D)from the same species
7.
The Appalachian Mountains, an old mountain range, was formed during what era?
A)Mesozoic
B)Cenozoic
C)Paleozoic
D)Precambrian
8.
How can plate tectonics contribute to evolution?
A)The movement of plates forces some animals underground.
B)Separating plates can divide groups of a population.
C)Radiation from plate tectonics can cause genetic change.
D)Volcanic eruptions can cause species to become extinct.
9.
What geologic era do you live in?
A)Paleozoic
B)Mesozoic
C)Cenozoic
D)Precambrian
10.
Which of the following is NOT a description of the current view of dinosaurs?
A)nurturing their young
B)fast-moving
C)cold-blooded
D)warm-blooded
11.
What types of animals dominate the Cenozoic Era?
A)mammals
B)reptiles
C)trilobites
D)dinosaurs
12.
__________ are ancestors of reptiles.
A)Birds
B)Mammals
C)Amphibians
D)Dinosaurs
13.
During the first billion years of Earth's history, ___________.
A)trilobites evolved
B)vertebrates evolved
C)there was no life
D)there was life everywhere
14.
Where did the oxygen in Earth's atmosphere come from originally?
A)from rocks
B)from plants
C)from cyanobacteria
D)from animals
15.
Which of the following is an example of how a new species can develop in nature?
A)A group becomes separated and they evolve until they cannot interbreed with the original population.
B)Two different species develop in such a way that they look the same.
C)A dog breeder makes a new breed of dog that looks different from all the others.
D)A scientist in a laboratory develops a new species.
16.
What does the name trilobite mean?
A)three brains
B)three lobes
C)three legs
D)three eyes
17.
How did trilobite eyes develop?
A)They developed the same way for all species.
B)They developed into many different forms over millions of years.
C)They all developed without eyes.
D)They all had complex eye structures.
18.
Which of the following is a species common during the Paleozoic Era?
A)trilobites
B)Homo sapiens
C)Ediacara life-forms
D)dinosaurs
19.
Which of the following is an example of Darwin's theory of evolution by natural selection?
A)Insects that blend into trees survive because they are not seen, and thus not eaten, by birds.
B)Giraffes that stretch their necks have necks that grow longer.
C)A breeder of cats specifically chooses cats to breed that have long, white fur.
D)Native Americans do not kill an albino animal because it is thought to be bad luck.
20.
When did Pangaea break up?
A)in the Cenozoic Era
B)in Precambrian time
C)in the Mesozoic Era
D)in Archean time
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